13636640532 has 24 divisors (see below), whose sum is σ = 31888466176. Its totient is φ = 4535598528.

The previous prime is 13636640527. The next prime is 13636640581. The reversal of 13636640532 is 23504663631.

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, 1237828 + ... + 1248795.

Almost surely, 2^13636640532 is an apocalyptic number.

13636640532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13636640532 is an abundant number, since it is smaller than the sum of its proper divisors (18251825644).

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

13636640532 is a wasteful number, since it uses less digits than its factorization.

13636640532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487087 (or 2487085 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 13636640532 in words is "thirteen billion, six hundred thirty-six million, six hundred forty thousand, five hundred thirty-two".