116921895780 has 24 divisors (see below), whose sum is σ = 327381308352. Its totient is φ = 31179172192.

The previous prime is 116921895751. The next prime is 116921895799. The reversal of 116921895780 is 87598129611.

It is a self number, because there is not a number n which added to its sum of digits gives 116921895780.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974349072 + ... + 974349191.

It is an arithmetic number, because the mean of its divisors is an integer number (13640887848).

Almost surely, 2^116921895780 is an apocalyptic number.

116921895780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116921895780 is an abundant number, since it is smaller than the sum of its proper divisors (210459412572).

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

116921895780 is a wasteful number, since it uses less digits than its factorization.

116921895780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948698275 (or 1948698273 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 57.

The spelling of 116921895780 in words is "one hundred sixteen billion, nine hundred twenty-one million, eight hundred ninety-five thousand, seven hundred eighty".