11905028568 has 64 divisors (see below), whose sum is σ = 33083136000. Its totient is φ = 3966709536.

The previous prime is 11905028539. The next prime is 11905028579. The reversal of 11905028568 is 86582050911.

It is a happy number.

11905028568 is a `hidden beast` number, since 1 + 1 + 9 + 0 + 502 + 85 + 68 = 666.

It is a super-2 number, since 2×11905028568² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587713 + ... + 607631.

It is an arithmetic number, because the mean of its divisors is an integer number (516924000).

Almost surely, 2^11905028568 is an apocalyptic number.

11905028568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11905028568 is an abundant number, since it is smaller than the sum of its proper divisors (21178107432).

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

11905028568 is a wasteful number, since it uses less digits than its factorization.

11905028568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22701 (or 22691 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 11905028568 in words is "eleven billion, nine hundred five million, twenty-eight thousand, five hundred sixty-eight".