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68364205528 = 23971973371327
BaseRepresentation
bin111111101010110100…
…101111110111011000
320112110102022110201011
4333222310233313120
52110002214034103
651223414103304
74640062105363
oct775264576730
9215412273634
1068364205528
1126aa18a2513
12112bb04ab34
1365a658b328
1434476850da
151ba1be0d6d
hexfead2fdd8

68364205528 has 64 divisors (see below), whose sum is σ = 130646355840. Its totient is φ = 33532821504.

The previous prime is 68364205523. The next prime is 68364205561. The reversal of 68364205528 is 82550246386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68364205523) 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, 51517201 + ... + 51518527.

It is an arithmetic number, because the mean of its divisors is an integer number (2041349310).

Almost surely, 268364205528 is an apocalyptic number.

It is an amenable number.

68364205528 is a deficient number, since it is larger than the sum of its proper divisors (62282150312).

68364205528 is a wasteful number, since it uses less digits than its factorization.

68364205528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964 (or 1960 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 68364205528 in words is "sixty-eight billion, three hundred sixty-four million, two hundred five thousand, five hundred twenty-eight".

Divisors: 1 2 4 8 97 194 197 337 388 394 674 776 788 1327 1348 1576 2654 2696 5308 10616 19109 32689 38218 65378 66389 76436 128719 130756 132778 152872 257438 261419 261512 265556 447199 514876 522838 531112 894398 1029752 1045676 1788796 2091352 3577592 6439733 12879466 25357643 25758932 43378303 50715286 51517864 86756606 88098203 101430572 173513212 176196406 202861144 347026424 352392812 704785624 8545525691 17091051382 34182102764 68364205528