79964420800 has 168 divisors, whose sum is σ = 216738842112. Its totient is φ = 28795008000.

The previous prime is 79964420791. The next prime is 79964420801. The reversal of 79964420800 is 802446997.

It is not an unprimeable number, because it can be changed into a prime (79964420801) 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, 1790745 + ... + 1834855.

Almost surely, 2^79964420800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79964420800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108369421056).

79964420800 is an abundant number, since it is smaller than the sum of its proper divisors (136774421312).

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

79964420800 is a wasteful number, since it uses less digits than its factorization.

79964420800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44247 (or 44232 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 79964420800 in words is "seventy-nine billion, nine hundred sixty-four million, four hundred twenty thousand, eight hundred".