13155235115531 has 16 divisors (see below), whose sum is σ = 13348173017088. Its totient is φ = 12963647160000.

The previous prime is 13155235115527. The next prime is 13155235115579. The reversal of 13155235115531 is 13551153255131.

It is a cyclic number.

It is not a de Polignac number, because 13155235115531 - 2² = 13155235115527 is a prime.

It is a super-2 number, since 2×13155235115531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13155235111531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27868151 + ... + 28336271.

It is an arithmetic number, because the mean of its divisors is an integer number (834260813568).

Almost surely, 2^{13155235115531} is an apocalyptic number.

13155235115531 is a deficient number, since it is larger than the sum of its proper divisors (192937901557).

13155235115531 is a wasteful number, since it uses less digits than its factorization.

13155235115531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469562.

The product of its digits is 168750, while the sum is 41.

The spelling of 13155235115531 in words is "thirteen trillion, one hundred fifty-five billion, two hundred thirty-five million, one hundred fifteen thousand, five hundred thirty-one".