116642942721 has 24 divisors (see below), whose sum is σ = 170568975720. Its totient is φ = 76803552000.

The previous prime is 116642942719. The next prime is 116642942737. The reversal of 116642942721 is 127249246611.

116642942721 is a `hidden beast` number, since 1 + 166 + 42 + 9 + 427 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 92377092096 + 24265850625 = 303936^2 + 155775^2 .

It is not a de Polignac number, because 116642942721 - 2¹ = 116642942719 is a prime.

It is a super-2 number, since 2×116642942721² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116642942761) 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, 214911 + ... + 528651.

It is an arithmetic number, because the mean of its divisors is an integer number (7107040655).

Almost surely, 2^116642942721 is an apocalyptic number.

It is an amenable number.

116642942721 is a deficient number, since it is larger than the sum of its proper divisors (53926032999).

116642942721 is a wasteful number, since it uses less digits than its factorization.

116642942721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314257 (or 314254 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 116642942721 in words is "one hundred sixteen billion, six hundred forty-two million, nine hundred forty-two thousand, seven hundred twenty-one".