113613402638 has 4 divisors (see below), whose sum is σ = 170420103960. Its totient is φ = 56806701318.

The previous prime is 113613402629. The next prime is 113613402667. The reversal of 113613402638 is 836204316311.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28403350658 + ... + 28403350661.

It is an arithmetic number, because the mean of its divisors is an integer number (42605025990).

Almost surely, 2^113613402638 is an apocalyptic number.

113613402638 is a deficient number, since it is larger than the sum of its proper divisors (56806701322).

113613402638 is an equidigital number, since it uses as much as digits as its factorization.

113613402638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56806701321.

The product of its (nonzero) digits is 62208, while the sum is 38.

Adding to 113613402638 its reverse (836204316311), we get a palindrome (949817718949).

The spelling of 113613402638 in words is "one hundred thirteen billion, six hundred thirteen million, four hundred two thousand, six hundred thirty-eight".