113979836881 has 3 divisors (see below), whose sum is σ = 113980174491. Its totient is φ = 113979499272.

The previous prime is 113979836857. The next prime is 113979836891. The reversal of 113979836881 is 188638979311.

The square root of 113979836881 is 337609.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 188638979311 = 73 ⋅2584095607.

It can be written as a sum of positive squares in only one way, i.e., 77529390481 + 36450446400 = 278441^2 + 190920^2 .

It is not a de Polignac number, because 113979836881 - 2⁵ = 113979836849 is a prime.

It is a super-2 number, since 2×113979836881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113979836891) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 168805 + ... + 506413.

It is an arithmetic number, because the mean of its divisors is an integer number (37993391497).

Almost surely, 2^113979836881 is an apocalyptic number.

113979836881 is the 337609-th square number.

113979836881 is the 168805-th centered octagonal number.

It is an amenable number.

113979836881 is a deficient number, since it is larger than the sum of its proper divisors (337610).

113979836881 is an frugal number, since it uses more digits than its factorization.

113979836881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675218 (or 337609 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 64.

Multiplying 113979836881 by its sum of digits (64), we get a square (7294709560384 = 2700872²).

The spelling of 113979836881 in words is "one hundred thirteen billion, nine hundred seventy-nine million, eight hundred thirty-six thousand, eight hundred eighty-one".