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51368436754768 = 2473130748192367
BaseRepresentation
bin10111010111000001001010…
…11011001110100101010000
320201212202220200100001221001
423223200211123032211100
523213110024302123033
6301130200054111344
713551150515053060
oct1353404533164520
9221782820301831
1051368436754768
1115405260415041
12591766964b554
13228803b12a683
14c98361d213a0
155e1326d06e7d
hex2eb8256ce950

51368436754768 has 80 divisors (see below), whose sum is σ = 117796026793984. Its totient is φ = 21235484154240.

The previous prime is 51368436754757. The next prime is 51368436754769. The reversal of 51368436754768 is 86745763486315.

It is a self number, because there is not a number n which added to its sum of digits gives 51368436754768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51368436754769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23030280 + ... + 25162087.

Almost surely, 251368436754768 is an apocalyptic number.

It is an amenable number.

51368436754768 is an abundant number, since it is smaller than the sum of its proper divisors (66427590039216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51368436754768 is a wasteful number, since it uses less digits than its factorization.

51368436754768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48192720 (or 48192714 counting only the distinct ones).

The product of its digits is 2438553600, while the sum is 73.

The spelling of 51368436754768 in words is "fifty-one trillion, three hundred sixty-eight billion, four hundred thirty-six million, seven hundred fifty-four thousand, seven hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 28 31 56 62 112 124 217 248 307 434 496 614 868 1228 1736 2149 2456 3472 4298 4912 8596 9517 17192 19034 34384 38068 66619 76136 133238 152272 266476 532952 1065904 48192367 96384734 192769468 337346569 385538936 674693138 771077872 1349386276 1493963377 2698772552 2987926754 5397545104 5975853508 10457743639 11951707016 14795056669 20915487278 23903414032 29590113338 41830974556 59180226676 83661949112 103565396683 118360453352 167323898224 207130793366 236720906704 414261586732 458646756739 828523173464 917293513478 1657046346928 1834587026956 3210527297173 3669174053912 6421054594346 7338348107824 12842109188692 25684218377384 51368436754768