13662605523 has 32 divisors (see below), whose sum is σ = 20909491200. Its totient is φ = 7773422976.

The previous prime is 13662605501. The next prime is 13662605573. The reversal of 13662605523 is 32550626631.

It is not a de Polignac number, because 13662605523 - 2¹⁴ = 13662589139 is a prime.

It is a super-2 number, since 2×13662605523² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13662605573) 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, 7636113 + ... + 7637901.

It is an arithmetic number, because the mean of its divisors is an integer number (653421600).

Almost surely, 2^13662605523 is an apocalyptic number.

13662605523 is a deficient number, since it is larger than the sum of its proper divisors (7246885677).

13662605523 is a wasteful number, since it uses less digits than its factorization.

13662605523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 13662605523 in words is "thirteen billion, six hundred sixty-two million, six hundred five thousand, five hundred twenty-three".