79816165632 has 216 divisors, whose sum is σ = 264166069440. Its totient is φ = 22703984640.

The previous prime is 79816165631. The next prime is 79816165661. The reversal of 79816165632 is 23656161897.

79816165632 is a `hidden beast` number, since 79 + 8 + 1 + 6 + 1 + 6 + 563 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (79816165631) 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, 3682507 + ... + 3704117.

Almost surely, 2^79816165632 is an apocalyptic number.

79816165632 is a gapful number since it is divisible by the number (72) 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 79816165632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132083034720).

79816165632 is an abundant number, since it is smaller than the sum of its proper divisors (184349903808).

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

79816165632 is a wasteful number, since it uses less digits than its factorization.

79816165632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21869 (or 21852 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 79816165632 in words is "seventy-nine billion, eight hundred sixteen million, one hundred sixty-five thousand, six hundred thirty-two".