117011803581 has 8 divisors (see below), whose sum is σ = 173350820160. Its totient is φ = 78007869036.

The previous prime is 117011803567. The next prime is 117011803603. The reversal of 117011803581 is 185308110711.

117011803581 is a `hidden beast` number, since 1 + 1 + 70 + 1 + 1 + 8 + 0 + 3 + 581 = 666.

It is not a de Polignac number, because 117011803581 - 2¹⁷ = 117011672509 is a prime.

It is a super-2 number, since 2×117011803581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117011803681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2166885225 + ... + 2166885278.

It is an arithmetic number, because the mean of its divisors is an integer number (21668852520).

Almost surely, 2^117011803581 is an apocalyptic number.

It is an amenable number.

117011803581 is a deficient number, since it is larger than the sum of its proper divisors (56339016579).

117011803581 is an equidigital number, since it uses as much as digits as its factorization.

117011803581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333770512 (or 4333770506 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 36.

The spelling of 117011803581 in words is "one hundred seventeen billion, eleven million, eight hundred three thousand, five hundred eighty-one".