11976397056 has 108 divisors (see below), whose sum is σ = 37187221708. Its totient is φ = 3685036032.

The previous prime is 11976397049. The next prime is 11976397057. The reversal of 11976397056 is 65079367911.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6792397056 + 5184000000 = 82416^2 + 72000^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11976396993 and 11976397011.

It is not an unprimeable number, because it can be changed into a prime (11976397057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169975 + ... + 229878.

Almost surely, 2^11976397056 is an apocalyptic number.

11976397056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11976397056 is an abundant number, since it is smaller than the sum of its proper divisors (25210824652).

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

11976397056 is a wasteful number, since it uses less digits than its factorization.

11976397056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399888 (or 399871 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The spelling of 11976397056 in words is "eleven billion, nine hundred seventy-six million, three hundred ninety-seven thousand, fifty-six".