13123533522155 has 64 divisors (see below), whose sum is σ = 18662448833280. Its totient is φ = 8668245196800.

The previous prime is 13123533522017. The next prime is 13123533522157. The reversal of 13123533522155 is 55122533532131.

It is a de Polignac number, because none of the positive numbers 2^k-13123533522155 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13123533522157) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1089897935 + ... + 1089909975.

It is an arithmetic number, because the mean of its divisors is an integer number (291600763020).

Almost surely, 2^{13123533522155} is an apocalyptic number.

13123533522155 is a deficient number, since it is larger than the sum of its proper divisors (5538915311125).

13123533522155 is a wasteful number, since it uses less digits than its factorization.

13123533522155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14520.

The product of its digits is 405000, while the sum is 41.

The spelling of 13123533522155 in words is "thirteen trillion, one hundred twenty-three billion, five hundred thirty-three million, five hundred twenty-two thousand, one hundred fifty-five".