13015513144 has 8 divisors (see below), whose sum is σ = 24404087160. Its totient is φ = 6507756568.

The previous prime is 13015513097. The next prime is 13015513183. The reversal of 13015513144 is 44131551031.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813469564 + ... + 813469579.

It is an arithmetic number, because the mean of its divisors is an integer number (3050510895).

Almost surely, 2^13015513144 is an apocalyptic number.

It is an amenable number.

13015513144 is a deficient number, since it is larger than the sum of its proper divisors (11388574016).

13015513144 is a wasteful number, since it uses less digits than its factorization.

13015513144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626939149 (or 1626939145 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 13015513144 in words is "thirteen billion, fifteen million, five hundred thirteen thousand, one hundred forty-four".