79722246408 has 128 divisors (see below), whose sum is σ = 235246878720. Its totient is φ = 22031642880.

The previous prime is 79722246403. The next prime is 79722246431. The reversal of 79722246408 is 80464222797.

It is not an unprimeable number, because it can be changed into a prime (79722246403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17741410 + ... + 17745902.

It is an arithmetic number, because the mean of its divisors is an integer number (1837866240).

Almost surely, 2^79722246408 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 79722246408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117623439360).

79722246408 is an abundant number, since it is smaller than the sum of its proper divisors (155524632312).

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

79722246408 is a wasteful number, since it uses less digits than its factorization.

79722246408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947 (or 7943 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 79722246408 in words is "seventy-nine billion, seven hundred twenty-two million, two hundred forty-six thousand, four hundred eight".