11867516631 has 12 divisors (see below), whose sum is σ = 17776856552. Its totient is φ = 7911677592.

The previous prime is 11867516629. The next prime is 11867516653. The reversal of 11867516631 is 13661576811.

11867516631 is a `hidden beast` number, since 1 + 1 + 8 + 6 + 7 + 5 + 1 + 6 + 631 = 666.

It is not a de Polignac number, because 11867516631 - 2¹ = 11867516629 is a prime.

It is a super-2 number, since 2×11867516631² (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 (11867516611) 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, 24418516 + ... + 24419001.

Almost surely, 2^11867516631 is an apocalyptic number.

11867516631 is a deficient number, since it is larger than the sum of its proper divisors (5909339921).

11867516631 is an frugal number, since it uses more digits than its factorization.

11867516631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48837532 (or 48837520 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The spelling of 11867516631 in words is "eleven billion, eight hundred sixty-seven million, five hundred sixteen thousand, six hundred thirty-one".