11697591056 has 20 divisors (see below), whose sum is σ = 22937146512. Its totient is φ = 5778327456.

The previous prime is 11697591049. The next prime is 11697591071. The reversal of 11697591056 is 65019579611.

It is a super-2 number, since 2×11697591056² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11697590995 and 11697591013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4402886 + ... + 4405541.

Almost surely, 2^11697591056 is an apocalyptic number.

11697591056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11697591056 is a deficient number, since it is larger than the sum of its proper divisors (11239555456).

11697591056 is an equidigital number, since it uses as much as digits as its factorization.

11697591056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8808518 (or 8808512 counting only the distinct ones).

The product of its (nonzero) digits is 510300, while the sum is 50.

The spelling of 11697591056 in words is "eleven billion, six hundred ninety-seven million, five hundred ninety-one thousand, fifty-six".