11537445131 has 16 divisors (see below), whose sum is σ = 12285302400. Its totient is φ = 10797416448.

The previous prime is 11537445121. The next prime is 11537445137. The reversal of 11537445131 is 13154473511.

It is a de Polignac number, because none of the positive numbers 2^k-11537445131 is a prime.

It is a super-2 number, since 2×11537445131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11537445091 and 11537445100.

It is not an unprimeable number, because it can be changed into a prime (11537445137) 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, 3464075 + ... + 3467403.

It is an arithmetic number, because the mean of its divisors is an integer number (767831400).

Almost surely, 2^11537445131 is an apocalyptic number.

11537445131 is a deficient number, since it is larger than the sum of its proper divisors (747857269).

11537445131 is a wasteful number, since it uses less digits than its factorization.

11537445131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438.

The product of its digits is 25200, while the sum is 35.

The spelling of 11537445131 in words is "eleven billion, five hundred thirty-seven million, four hundred forty-five thousand, one hundred thirty-one".