117856881807 has 32 divisors (see below), whose sum is σ = 185423953920. Its totient is φ = 65160516960.

The previous prime is 117856881781. The next prime is 117856881817. The reversal of 117856881807 is 708188658711.

It is not a de Polignac number, because 117856881807 - 2¹⁸ = 117856619663 is a prime.

It is a super-4 number, since 4×117856881807⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117856881817) 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, 3576468 + ... + 3609270.

It is an arithmetic number, because the mean of its divisors is an integer number (5794498560).

Almost surely, 2^117856881807 is an apocalyptic number.

117856881807 is a deficient number, since it is larger than the sum of its proper divisors (67567072113).

117856881807 is a wasteful number, since it uses less digits than its factorization.

117856881807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38363.

The product of its (nonzero) digits is 6021120, while the sum is 60.

The spelling of 117856881807 in words is "one hundred seventeen billion, eight hundred fifty-six million, eight hundred eighty-one thousand, eight hundred seven".