116661991170816 has 2160 divisors, whose sum is σ = 463769539242240. Its totient is φ = 28465863229440.

The previous prime is 116661991170793. The next prime is 116661991170883. The reversal of 116661991170816 is 618071199166611.

It is a super-2 number, since 2×116661991170816² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 20041569186 + ... + 20041575006.

Almost surely, 2^{116661991170816} is an apocalyptic number.

116661991170816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 116661991170816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231884769621120).

116661991170816 is an abundant number, since it is smaller than the sum of its proper divisors (347107548071424).

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

116661991170816 is a wasteful number, since it uses less digits than its factorization.

116661991170816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944 (or 5908 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 63.

The spelling of 116661991170816 in words is "one hundred sixteen trillion, six hundred sixty-one billion, nine hundred ninety-one million, one hundred seventy thousand, eight hundred sixteen".