13057657521 has 8 divisors (see below), whose sum is σ = 17424711264. Its totient is φ = 8697854400.

The previous prime is 13057657513. The next prime is 13057657523. The reversal of 13057657521 is 12575675031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13057657521 - 2³ = 13057657513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13057657523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808451 + ... + 1815656.

It is an arithmetic number, because the mean of its divisors is an integer number (2178088908).

Almost surely, 2^13057657521 is an apocalyptic number.

It is an amenable number.

13057657521 is a deficient number, since it is larger than the sum of its proper divisors (4367053743).

13057657521 is a wasteful number, since it uses less digits than its factorization.

13057657521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625311.

The product of its (nonzero) digits is 220500, while the sum is 42.

The spelling of 13057657521 in words is "thirteen billion, fifty-seven million, six hundred fifty-seven thousand, five hundred twenty-one".