116637642585 has 24 divisors (see below), whose sum is σ = 202180033224. Its totient is φ = 62204244480.

The previous prime is 116637642571. The next prime is 116637642587. The reversal of 116637642585 is 585246736611.

It is a happy number.

116637642585 is a `hidden beast` number, since 1 + 16 + 6 + 3 + 7 + 6 + 42 + 585 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35357913369 + 81279729216 = 188037^2 + 285096^2 .

It is not a de Polignac number, because 116637642585 - 2¹⁵ = 116637609817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (116637642587) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1824055 + ... + 1886915.

It is an arithmetic number, because the mean of its divisors is an integer number (8424168051).

Almost surely, 2^116637642585 is an apocalyptic number.

116637642585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116637642585 is a deficient number, since it is larger than the sum of its proper divisors (85542390639).

116637642585 is a wasteful number, since it uses less digits than its factorization.

116637642585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104105 (or 104102 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 116637642585 in words is "one hundred sixteen billion, six hundred thirty-seven million, six hundred forty-two thousand, five hundred eighty-five".