113105250561 has 12 divisors (see below), whose sum is σ = 160199825552. Its totient is φ = 70967999808.

The previous prime is 113105250551. The next prime is 113105250569. The reversal of 113105250561 is 165052501311.

It is not a de Polignac number, because 113105250561 - 2⁶ = 113105250497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113105250569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65227075 + ... + 65228808.

Almost surely, 2^113105250561 is an apocalyptic number.

It is an amenable number.

113105250561 is a deficient number, since it is larger than the sum of its proper divisors (47094574991).

113105250561 is a wasteful number, since it uses less digits than its factorization.

113105250561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130455920 (or 130455903 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 113105250561 its reverse (165052501311), we get a palindrome (278157751872).

The spelling of 113105250561 in words is "one hundred thirteen billion, one hundred five million, two hundred fifty thousand, five hundred sixty-one".