13156625554 has 32 divisors (see below), whose sum is σ = 21000332160. Its totient is φ = 6168045312.

The previous prime is 13156625549. The next prime is 13156625561. The reversal of 13156625554 is 45552665131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13156625554.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4257642 + ... + 4260730.

It is an arithmetic number, because the mean of its divisors is an integer number (656260380).

Almost surely, 2^13156625554 is an apocalyptic number.

13156625554 is a deficient number, since it is larger than the sum of its proper divisors (7843706606).

13156625554 is a wasteful number, since it uses less digits than its factorization.

13156625554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914.

The product of its digits is 540000, while the sum is 43.

The spelling of 13156625554 in words is "thirteen billion, one hundred fifty-six million, six hundred twenty-five thousand, five hundred fifty-four".