13531325553 has 12 divisors (see below), whose sum is σ = 19608917328. Its totient is φ = 8991497880.

The previous prime is 13531325503. The next prime is 13531325567. The reversal of 13531325553 is 35552313531.

13531325553 is a `hidden beast` number, since 1 + 353 + 1 + 3 + 255 + 53 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-13531325553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13531325503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2445903 + ... + 2451428.

It is an arithmetic number, because the mean of its divisors is an integer number (1634076444).

Almost surely, 2^13531325553 is an apocalyptic number.

It is an amenable number.

13531325553 is a deficient number, since it is larger than the sum of its proper divisors (6077591775).

13531325553 is a wasteful number, since it uses less digits than its factorization.

13531325553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4897644 (or 4897641 counting only the distinct ones).

The product of its digits is 101250, while the sum is 36.

The spelling of 13531325553 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-five thousand, five hundred fifty-three".