117685500591 has 16 divisors (see below), whose sum is σ = 158501607264. Its totient is φ = 77664943104.

The previous prime is 117685500571. The next prime is 117685500593. The reversal of 117685500591 is 195005586711.

It is not a de Polignac number, because 117685500591 - 2⁷ = 117685500463 is a prime.

It is a super-2 number, since 2×117685500591² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117685500591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117685500593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52395 + ... + 487971.

It is an arithmetic number, because the mean of its divisors is an integer number (9906350454).

Almost surely, 2^117685500591 is an apocalyptic number.

117685500591 is a deficient number, since it is larger than the sum of its proper divisors (40816106673).

117685500591 is a wasteful number, since it uses less digits than its factorization.

117685500591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436490.

The product of its (nonzero) digits is 378000, while the sum is 48.

The spelling of 117685500591 in words is "one hundred seventeen billion, six hundred eighty-five million, five hundred thousand, five hundred ninety-one".