79917594900000 has 576 divisors, whose sum is σ = 308054394006912. Its totient is φ = 17883648000000.

The previous prime is 79917594899993. The next prime is 79917594900019. The reversal of 79917594900000 is 949571997.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 79917594899898 and 79917594899907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 41968560 + ... + 43831440.

It is an arithmetic number, because the mean of its divisors is an integer number (534816656262).

Almost surely, 2^{79917594900000} 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 79917594900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154027197003456).

79917594900000 is an abundant number, since it is smaller than the sum of its proper divisors (228136799106912).

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

79917594900000 is a wasteful number, since it uses less digits than its factorization.

79917594900000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862943 (or 1862915 counting only the distinct ones).

The product of its (nonzero) digits is 6429780, while the sum is 60.

The spelling of 79917594900000 in words is "seventy-nine trillion, nine hundred seventeen billion, five hundred ninety-four million, nine hundred thousand".