11550556131 has 16 divisors (see below), whose sum is σ = 15934575360. Its totient is φ = 7433546400.

The previous prime is 11550556123. The next prime is 11550556151. The reversal of 11550556131 is 13165505511.

It is not a de Polignac number, because 11550556131 - 2³ = 11550556123 is a prime.

It is a super-2 number, since 2×11550556131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11550556092 and 11550556101.

It is not an unprimeable number, because it can be changed into a prime (11550556151) 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, 921456 + ... + 933906.

It is an arithmetic number, because the mean of its divisors is an integer number (995910960).

Almost surely, 2^11550556131 is an apocalyptic number.

11550556131 is a deficient number, since it is larger than the sum of its proper divisors (4384019229).

11550556131 is a wasteful number, since it uses less digits than its factorization.

11550556131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23146.

The product of its (nonzero) digits is 11250, while the sum is 33.

The spelling of 11550556131 in words is "eleven billion, five hundred fifty million, five hundred fifty-six thousand, one hundred thirty-one".