117437486991 has 32 divisors (see below), whose sum is σ = 175022055936. Its totient is φ = 69423360000.

The previous prime is 117437486987. The next prime is 117437487001. The reversal of 117437486991 is 199684734711.

It is a happy number.

It is not a de Polignac number, because 117437486991 - 2² = 117437486987 is a prime.

It is a super-2 number, since 2×117437486991² (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 (117437486911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12105855 + ... + 12115551.

It is an arithmetic number, because the mean of its divisors is an integer number (5469439248).

Almost surely, 2^117437486991 is an apocalyptic number.

117437486991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117437486991 is a deficient number, since it is larger than the sum of its proper divisors (57584568945).

117437486991 is a wasteful number, since it uses less digits than its factorization.

117437486991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18703.

The product of its digits is 9144576, while the sum is 60.

The spelling of 117437486991 in words is "one hundred seventeen billion, four hundred thirty-seven million, four hundred eighty-six thousand, nine hundred ninety-one".