13538910144 has 28 divisors (see below), whose sum is σ = 35821700264. Its totient is φ = 4512969984.

The previous prime is 13538910139. The next prime is 13538910157. The reversal of 13538910144 is 44101983531.

It is a super-2 number, since 2×13538910144² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35257387 + ... + 35257770.

It is an arithmetic number, because the mean of its divisors is an integer number (1279346438).

Almost surely, 2^13538910144 is an apocalyptic number.

It is an amenable number.

13538910144 is an abundant number, since it is smaller than the sum of its proper divisors (22282790120).

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

13538910144 is an equidigital number, since it uses as much as digits as its factorization.

13538910144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70515172 (or 70515162 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 13538910144 in words is "thirteen billion, five hundred thirty-eight million, nine hundred ten thousand, one hundred forty-four".