116921235172 has 72 divisors (see below), whose sum is σ = 259207772544. Its totient is φ = 45110934528.

The previous prime is 116921235131. The next prime is 116921235181. The reversal of 116921235172 is 271532129611.

It is a super-2 number, since 2×116921235172² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 127993 + ... + 500224.

It is an arithmetic number, because the mean of its divisors is an integer number (3600107952).

Almost surely, 2^116921235172 is an apocalyptic number.

It is an amenable number.

116921235172 is an abundant number, since it is smaller than the sum of its proper divisors (142286537372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

116921235172 is a wasteful number, since it uses less digits than its factorization.

116921235172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628285 (or 628266 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The spelling of 116921235172 in words is "one hundred sixteen billion, nine hundred twenty-one million, two hundred thirty-five thousand, one hundred seventy-two".