11661524688 has 80 divisors (see below), whose sum is σ = 33203249856. Its totient is φ = 3497349120.

The previous prime is 11661524687. The next prime is 11661524701. The reversal of 11661524688 is 88642516611.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661524687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62631 + ... + 165062.

Almost surely, 2^11661524688 is an apocalyptic number.

It is an amenable number.

11661524688 is an abundant number, since it is smaller than the sum of its proper divisors (21541725168).

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

11661524688 is a wasteful number, since it uses less digits than its factorization.

11661524688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227812 (or 227806 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The spelling of 11661524688 in words is "eleven billion, six hundred sixty-one million, five hundred twenty-four thousand, six hundred eighty-eight".