13557399524 has 6 divisors (see below), whose sum is σ = 23725449174. Its totient is φ = 6778699760.

The previous prime is 13557399503. The next prime is 13557399563. The reversal of 13557399524 is 42599375531.

It can be written as a sum of positive squares in only one way, i.e., 12793872100 + 763527424 = 113110^2 + 27632^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1694674937 + ... + 1694674944.

It is an arithmetic number, because the mean of its divisors is an integer number (3954241529).

Almost surely, 2^13557399524 is an apocalyptic number.

It is an amenable number.

13557399524 is a deficient number, since it is larger than the sum of its proper divisors (10168049650).

13557399524 is a wasteful number, since it uses less digits than its factorization.

13557399524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389349885 (or 3389349883 counting only the distinct ones).

The product of its digits is 5103000, while the sum is 53.

The spelling of 13557399524 in words is "thirteen billion, five hundred fifty-seven million, three hundred ninety-nine thousand, five hundred twenty-four".