113420181134581 has 4 divisors (see below), whose sum is σ = 113492011523200. Its totient is φ = 113348350745964.

The previous prime is 113420181134567. The next prime is 113420181134597. The reversal of 113420181134581 is 185431181024311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113420181134581 - 2⁷ = 113420181134453 is a prime.

It is a super-2 number, since 2×113420181134581² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113420181134551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35915191941 + ... + 35915195098.

It is an arithmetic number, because the mean of its divisors is an integer number (28373002880800).

Almost surely, 2^{113420181134581} is an apocalyptic number.

It is an amenable number.

113420181134581 is a deficient number, since it is larger than the sum of its proper divisors (71830388619).

113420181134581 is an equidigital number, since it uses as much as digits as its factorization.

113420181134581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71830388618.

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 113420181134581 in words is "one hundred thirteen trillion, four hundred twenty billion, one hundred eighty-one million, one hundred thirty-four thousand, five hundred eighty-one".