79786149922944 has 768 divisors, whose sum is σ = 258095185920000. Its totient is φ = 23541587435520.

The previous prime is 79786149922867. The next prime is 79786149923023. The reversal of 79786149922944 is 44922994168797.

79786149922944 is a `hidden beast` number, since 7 + 9 + 7 + 8 + 61 + 499 + 2 + 29 + 44 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3895988097 + ... + 3896008575.

It is an arithmetic number, because the mean of its divisors is an integer number (336061440000).

Almost surely, 2^{79786149922944} 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 79786149922944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129047592960000).

79786149922944 is an abundant number, since it is smaller than the sum of its proper divisors (178309035997056).

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

79786149922944 is a wasteful number, since it uses less digits than its factorization.

79786149922944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20721 (or 20706 counting only the distinct ones).

The product of its digits is 3950456832, while the sum is 81.

The spelling of 79786149922944 in words is "seventy-nine trillion, seven hundred eighty-six billion, one hundred forty-nine million, nine hundred twenty-two thousand, nine hundred forty-four".