11625543631 has 12 divisors (see below), whose sum is σ = 12591656112. Its totient is φ = 10728671616.

The previous prime is 11625543617. The next prime is 11625543641. The reversal of 11625543631 is 13634552611.

It is a de Polignac number, because none of the positive numbers 2^k-11625543631 is a prime.

It is a super-2 number, since 2×11625543631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11625543641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1269190 + ... + 1278316.

It is an arithmetic number, because the mean of its divisors is an integer number (1049304676).

Almost surely, 2^11625543631 is an apocalyptic number.

11625543631 is a deficient number, since it is larger than the sum of its proper divisors (966112481).

11625543631 is an equidigital number, since it uses as much as digits as its factorization.

11625543631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16690 (or 16677 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The spelling of 11625543631 in words is "eleven billion, six hundred twenty-five million, five hundred forty-three thousand, six hundred thirty-one".