13129523455 has 4 divisors (see below), whose sum is σ = 15755428152. Its totient is φ = 10503618760.

The previous prime is 13129523441. The next prime is 13129523497. The reversal of 13129523455 is 55432592131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13129523455 - 2²⁷ = 12995305727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312952341 + ... + 1312952350.

It is an arithmetic number, because the mean of its divisors is an integer number (3938857038).

Almost surely, 2^13129523455 is an apocalyptic number.

13129523455 is a deficient number, since it is larger than the sum of its proper divisors (2625904697).

13129523455 is an equidigital number, since it uses as much as digits as its factorization.

13129523455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625904696.

The product of its digits is 162000, while the sum is 40.

The spelling of 13129523455 in words is "thirteen billion, one hundred twenty-nine million, five hundred twenty-three thousand, four hundred fifty-five".