13155615655 has 16 divisors (see below), whose sum is σ = 19429833024. Its totient is φ = 8327070720.

The previous prime is 13155615643. The next prime is 13155615659. The reversal of 13155615655 is 55651655131.

It is not a de Polignac number, because 13155615655 - 2¹⁵ = 13155582887 is a prime.

It is a super-3 number, since 3×13155615655³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155615659) 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, 14456266 + ... + 14457175.

It is an arithmetic number, because the mean of its divisors is an integer number (1214364564).

Almost surely, 2^13155615655 is an apocalyptic number.

13155615655 is a deficient number, since it is larger than the sum of its proper divisors (6274217369).

13155615655 is a wasteful number, since it uses less digits than its factorization.

13155615655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28913466.

The product of its digits is 337500, while the sum is 43.

The spelling of 13155615655 in words is "thirteen billion, one hundred fifty-five million, six hundred fifteen thousand, six hundred fifty-five".