13530374172 has 36 divisors (see below), whose sum is σ = 39087748336. Its totient is φ = 3865821120.

The previous prime is 13530374141. The next prime is 13530374189. The reversal of 13530374172 is 27147303531.

13530374172 is a `hidden beast` number, since 13 + 530 + 3 + 7 + 41 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26845729 + ... + 26846232.

Almost surely, 2^13530374172 is an apocalyptic number.

13530374172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13530374172 is an abundant number, since it is smaller than the sum of its proper divisors (25557374164).

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

13530374172 is a wasteful number, since it uses less digits than its factorization.

13530374172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53691978 (or 53691973 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The spelling of 13530374172 in words is "thirteen billion, five hundred thirty million, three hundred seventy-four thousand, one hundred seventy-two".