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61316211261354 = 23734918732233381
BaseRepresentation
bin11011111000100010010101…
…11111011011111110101010
322001002202212012002101002120
431330101022333123332222
531014101100040330404
6334224140101412110
715625643606156550
oct1574211277337652
9261082765071076
1061316211261354
11185a0071823955
126a635ab10a036
13282a12b429b6a
14111da12d27bd0
15714e96cee9d9
hex37c44afdbfaa

61316211261354 has 64 divisors (see below), whose sum is σ = 140628024364800. Its totient is φ = 17459385615360.

The previous prime is 61316211261293. The next prime is 61316211261359. The reversal of 61316211261354 is 45316211261316.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (61316211261359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26337744 + ... + 28571124.

It is an arithmetic number, because the mean of its divisors is an integer number (2197312880700).

Almost surely, 261316211261354 is an apocalyptic number.

61316211261354 is an abundant number, since it is smaller than the sum of its proper divisors (79311813103446).

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

61316211261354 is a wasteful number, since it uses less digits than its factorization.

61316211261354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235615.

The product of its digits is 155520, while the sum is 42.

The spelling of 61316211261354 in words is "sixty-one trillion, three hundred sixteen billion, two hundred eleven million, two hundred sixty-one thousand, three hundred fifty-four".

Divisors: 1 2 3 6 7 14 21 42 349 698 1047 1873 2094 2443 3746 4886 5619 7329 11238 13111 14658 26222 39333 78666 653677 1307354 1961031 2233381 3922062 4466762 4575739 6700143 9151478 13400286 13727217 15633667 27454434 31267334 46901001 93802002 779449969 1558899938 2338349907 4183122613 4676699814 5456149783 8366245226 10912299566 12549367839 16368449349 25098735678 29281858291 32736898698 58563716582 87845574873 175691149746 1459909791937 2919819583874 4379729375811 8759458751622 10219368543559 20438737087118 30658105630677 61316211261354