11681257152 has 56 divisors (see below), whose sum is σ = 32533336000. Its totient is φ = 3688816896.

The previous prime is 11681257139. The next prime is 11681257177. The reversal of 11681257152 is 25175218611.

It is a super-2 number, since 2×11681257152² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11681257152.

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, 1597402 + ... + 1604697.

Almost surely, 2^11681257152 is an apocalyptic number.

11681257152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11681257152 is an abundant number, since it is smaller than the sum of its proper divisors (20852078848).

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

11681257152 is a wasteful number, since it uses less digits than its factorization.

11681257152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202133 (or 3202123 counting only the distinct ones).

The product of its digits is 33600, while the sum is 39.

The spelling of 11681257152 in words is "eleven billion, six hundred eighty-one million, two hundred fifty-seven thousand, one hundred fifty-two".