113438512902 has 64 divisors (see below), whose sum is σ = 266600968704. Its totient is φ = 31723895040.

The previous prime is 113438512879. The next prime is 113438512903. The reversal of 113438512902 is 209215834311.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113438512903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4635583 + ... + 4659989.

It is an arithmetic number, because the mean of its divisors is an integer number (4165640136).

Almost surely, 2^113438512902 is an apocalyptic number.

113438512902 is an abundant number, since it is smaller than the sum of its proper divisors (153162455802).

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

113438512902 is a wasteful number, since it uses less digits than its factorization.

113438512902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29853.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 113438512902 in words is "one hundred thirteen billion, four hundred thirty-eight million, five hundred twelve thousand, nine hundred two".