13155235252205 has 32 divisors (see below), whose sum is σ = 16090998973920. Its totient is φ = 10322674974720.

The previous prime is 13155235252067. The next prime is 13155235252249. The reversal of 13155235252205 is 50225253255131.

It can be written as a sum of positive squares in 16 ways, for example, as 58805280004 + 13096429972201 = 242498^2 + 3618899^2 .

It is not a de Polignac number, because 13155235252205 - 2³⁶ = 13086515775469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214192541 + ... + 214253949.

It is an arithmetic number, because the mean of its divisors is an integer number (502843717935).

Almost surely, 2^{13155235252205} is an apocalyptic number.

It is an amenable number.

13155235252205 is a deficient number, since it is larger than the sum of its proper divisors (2935763721715).

13155235252205 is a wasteful number, since it uses less digits than its factorization.

13155235252205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64721.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 13155235252205 in words is "thirteen trillion, one hundred fifty-five billion, two hundred thirty-five million, two hundred fifty-two thousand, two hundred five".