79737384816 has 120 divisors (see below), whose sum is σ = 235000293840. Its totient is φ = 25169356800.

The previous prime is 79737384763. The next prime is 79737384821. The reversal of 79737384816 is 61848373797.

79737384816 is a `hidden beast` number, since 7 + 97 + 37 + 38 + 481 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8370136 + ... + 8379656.

It is an arithmetic number, because the mean of its divisors is an integer number (1958335782).

Almost surely, 2^79737384816 is an apocalyptic number.

79737384816 is a gapful number since it is divisible by the number (76) 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 79737384816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117500146920).

79737384816 is an abundant number, since it is smaller than the sum of its proper divisors (155262909024).

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

79737384816 is a wasteful number, since it uses less digits than its factorization.

79737384816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12615 (or 12606 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The spelling of 79737384816 in words is "seventy-nine billion, seven hundred thirty-seven million, three hundred eighty-four thousand, eight hundred sixteen".