11639473972 has 24 divisors (see below), whose sum is σ = 23354792384. Its totient is φ = 4972093632.

The previous prime is 11639473939. The next prime is 11639473999. The reversal of 11639473972 is 27937493611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668433 + ... + 685624.

Almost surely, 2^11639473972 is an apocalyptic number.

It is an amenable number.

11639473972 is an abundant number, since it is smaller than the sum of its proper divisors (11715318412).

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

11639473972 is a wasteful number, since it uses less digits than its factorization.

11639473972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354375 (or 1354373 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 52.

The spelling of 11639473972 in words is "eleven billion, six hundred thirty-nine million, four hundred seventy-three thousand, nine hundred seventy-two".