113611255561 has 32 divisors (see below), whose sum is σ = 127247846400. Its totient is φ = 100877736960.

The previous prime is 113611255523. The next prime is 113611255577. The reversal of 113611255561 is 165552116311.

It is a cyclic number.

It is not a de Polignac number, because 113611255561 - 2²⁹ = 113074384649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113611255561.

It is not an unprimeable number, because it can be changed into a prime (113611255591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50069935 + ... + 50072203.

It is an arithmetic number, because the mean of its divisors is an integer number (3976495200).

Almost surely, 2^113611255561 is an apocalyptic number.

It is an amenable number.

113611255561 is a deficient number, since it is larger than the sum of its proper divisors (13636590839).

113611255561 is a wasteful number, since it uses less digits than its factorization.

113611255561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009.

The product of its digits is 27000, while the sum is 37.

The spelling of 113611255561 in words is "one hundred thirteen billion, six hundred eleven million, two hundred fifty-five thousand, five hundred sixty-one".