11898765656 has 32 divisors (see below), whose sum is σ = 24294222000. Its totient is φ = 5441901696.

The previous prime is 11898765631. The next prime is 11898765667. The reversal of 11898765656 is 65656789811.

It is a super-2 number, since 2×11898765656² (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 7 ways as a sum of consecutive naturals, for example, 1345271 + ... + 1354086.

Almost surely, 2^11898765656 is an apocalyptic number.

It is an amenable number.

11898765656 is an abundant number, since it is smaller than the sum of its proper divisors (12395456344).

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

11898765656 is a wasteful number, since it uses less digits than its factorization.

11898765656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699411 (or 2699407 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 62.

The spelling of 11898765656 in words is "eleven billion, eight hundred ninety-eight million, seven hundred sixty-five thousand, six hundred fifty-six".