13431557155 has 32 divisors (see below), whose sum is σ = 16715160000. Its totient is φ = 10354176000.

The previous prime is 13431557143. The next prime is 13431557173. The reversal of 13431557155 is 55175513431.

It is not a de Polignac number, because 13431557155 - 2⁵ = 13431557123 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8959596 + ... + 8961094.

It is an arithmetic number, because the mean of its divisors is an integer number (522348750).

Almost surely, 2^13431557155 is an apocalyptic number.

13431557155 is a deficient number, since it is larger than the sum of its proper divisors (3283602845).

13431557155 is a wasteful number, since it uses less digits than its factorization.

13431557155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055.

The product of its digits is 157500, while the sum is 40.

The spelling of 13431557155 in words is "thirteen billion, four hundred thirty-one million, five hundred fifty-seven thousand, one hundred fifty-five".