11550658872 has 32 divisors (see below), whose sum is σ = 28970726400. Its totient is φ = 3837675744.

The previous prime is 11550658871. The next prime is 11550658877. The reversal of 11550658872 is 27885605511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550658871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776472 + ... + 791207.

It is an arithmetic number, because the mean of its divisors is an integer number (905335200).

Almost surely, 2^11550658872 is an apocalyptic number.

11550658872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11550658872 is an abundant number, since it is smaller than the sum of its proper divisors (17420067528).

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

11550658872 is a wasteful number, since it uses less digits than its factorization.

11550658872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567995 (or 1567991 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 48.

The spelling of 11550658872 in words is "eleven billion, five hundred fifty million, six hundred fifty-eight thousand, eight hundred seventy-two".