13166700523 has 4 divisors (see below), whose sum is σ = 13167205488. Its totient is φ = 13166195560.

The previous prime is 13166700509. The next prime is 13166700539. The reversal of 13166700523 is 32500766131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32500766131 = 11839 ⋅2745229.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13166700523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13166700563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211111 + ... + 266272.

It is an arithmetic number, because the mean of its divisors is an integer number (3291801372).

Almost surely, 2^13166700523 is an apocalyptic number.

13166700523 is a deficient number, since it is larger than the sum of its proper divisors (504965).

13166700523 is an equidigital number, since it uses as much as digits as its factorization.

13166700523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504964.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 13166700523 in words is "thirteen billion, one hundred sixty-six million, seven hundred thousand, five hundred twenty-three".