13105105056 has 72 divisors (see below), whose sum is σ = 37716719040. Its totient is φ = 4315729536.

The previous prime is 13105105043. The next prime is 13105105063. The reversal of 13105105056 is 65050150131.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250216 + ... + 298023.

It is an arithmetic number, because the mean of its divisors is an integer number (523843320).

Almost surely, 2^13105105056 is an apocalyptic number.

13105105056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13105105056 is an abundant number, since it is smaller than the sum of its proper divisors (24611613984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13105105056 is a wasteful number, since it uses less digits than its factorization.

13105105056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548338 (or 548327 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 13105105056 its reverse (65050150131), we get a palindrome (78155255187).

The spelling of 13105105056 in words is "thirteen billion, one hundred five million, one hundred five thousand, fifty-six".