10656781164 has 36 divisors (see below), whose sum is σ = 27086819760. Its totient is φ = 3532632480.

The previous prime is 10656781151. The next prime is 10656781183. The reversal of 10656781164 is 46118765601.

10656781164 is a `hidden beast` number, since 1 + 0 + 6 + 567 + 81 + 1 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×10656781164² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811224 + ... + 824255.

It is an arithmetic number, because the mean of its divisors is an integer number (752411660).

Almost surely, 2^10656781164 is an apocalyptic number.

It is an amenable number.

10656781164 is an abundant number, since it is smaller than the sum of its proper divisors (16430038596).

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

10656781164 is a wasteful number, since it uses less digits than its factorization.

10656781164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635670 (or 1635665 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 10656781164 in words is "ten billion, six hundred fifty-six million, seven hundred eighty-one thousand, one hundred sixty-four".