13015520553 has 32 divisors (see below), whose sum is σ = 20037611520. Its totient is φ = 7360911360.

The previous prime is 13015520533. The next prime is 13015520647. The reversal of 13015520553 is 35502551031.

It is not a de Polignac number, because 13015520553 - 2¹² = 13015516457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13015520553.

It is not an unprimeable number, because it can be changed into a prime (13015520503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3163968 + ... + 3168078.

It is an arithmetic number, because the mean of its divisors is an integer number (626175360).

Almost surely, 2^13015520553 is an apocalyptic number.

It is an amenable number.

13015520553 is a deficient number, since it is larger than the sum of its proper divisors (7022090967).

13015520553 is a wasteful number, since it uses less digits than its factorization.

13015520553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637.

The product of its (nonzero) digits is 11250, while the sum is 30.

The spelling of 13015520553 in words is "thirteen billion, fifteen million, five hundred twenty thousand, five hundred fifty-three".