79439892480 has 832 divisors, whose sum is σ = 312427019520. Its totient is φ = 19025362944.

The previous prime is 79439892463. The next prime is 79439892503. The reversal of 79439892480 is 8429893497.

79439892480 is a `hidden beast` number, since 79 + 4 + 3 + 9 + 89 + 2 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (832).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 309104512 + ... + 309104768.

Almost surely, 2^79439892480 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 79439892480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156213509760).

79439892480 is an abundant number, since it is smaller than the sum of its proper divisors (232987127040).

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

79439892480 is a wasteful number, since it uses less digits than its factorization.

79439892480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 79439892480 in words is "seventy-nine billion, four hundred thirty-nine million, eight hundred ninety-two thousand, four hundred eighty".