11657293872 has 80 divisors (see below), whose sum is σ = 35913177600. Its totient is φ = 3185842176.

The previous prime is 11657293867. The next prime is 11657293891. The reversal of 11657293872 is 27839275611.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746497 + ... + 761952.

It is an arithmetic number, because the mean of its divisors is an integer number (448914720).

Almost surely, 2^11657293872 is an apocalyptic number.

11657293872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11657293872 is an abundant number, since it is smaller than the sum of its proper divisors (24255883728).

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

11657293872 is a wasteful number, since it uses less digits than its factorization.

11657293872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508490 (or 1508484 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The spelling of 11657293872 in words is "eleven billion, six hundred fifty-seven million, two hundred ninety-three thousand, eight hundred seventy-two".