13011555144 has 32 divisors (see below), whose sum is σ = 37175872320. Its totient is φ = 3717587136.

The previous prime is 13011555131. The next prime is 13011555181. The reversal of 13011555144 is 44155511031.

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, 38724699 + ... + 38725034.

It is an arithmetic number, because the mean of its divisors is an integer number (1161746010).

Almost surely, 2^13011555144 is an apocalyptic number.

13011555144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13011555144 is an abundant number, since it is smaller than the sum of its proper divisors (24164317176).

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

13011555144 is a wasteful number, since it uses less digits than its factorization.

13011555144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77449749 (or 77449745 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 13011555144 in words is "thirteen billion, eleven million, five hundred fifty-five thousand, one hundred forty-four".