113437805638 has 32 divisors (see below), whose sum is σ = 180522731520. Its totient is φ = 53346569760.

The previous prime is 113437805609. The next prime is 113437805641. The reversal of 113437805638 is 836508734311.

It is a junction number, because it is equal to n+sod(n) for n = 113437805591 and 113437805600.

It is a congruent number.

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, 15841903 + ... + 15849061.

It is an arithmetic number, because the mean of its divisors is an integer number (5641335360).

Almost surely, 2^113437805638 is an apocalyptic number.

113437805638 is a deficient number, since it is larger than the sum of its proper divisors (67084925882).

113437805638 is a wasteful number, since it uses less digits than its factorization.

113437805638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12892.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 113437805638 in words is "one hundred thirteen billion, four hundred thirty-seven million, eight hundred five thousand, six hundred thirty-eight".