13641656532 has 24 divisors (see below), whose sum is σ = 36377750976. Its totient is φ = 3897616128.

The previous prime is 13641656531. The next prime is 13641656543. The reversal of 13641656532 is 23565614631.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13641656531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81200253 + ... + 81200420.

It is an arithmetic number, because the mean of its divisors is an integer number (1515739624).

Almost surely, 2^13641656532 is an apocalyptic number.

13641656532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13641656532 is an abundant number, since it is smaller than the sum of its proper divisors (22736094444).

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

13641656532 is a wasteful number, since it uses less digits than its factorization.

13641656532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162400687 (or 162400685 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The spelling of 13641656532 in words is "thirteen billion, six hundred forty-one million, six hundred fifty-six thousand, five hundred thirty-two".