79680506784 has 96 divisors (see below), whose sum is σ = 211849344000. Its totient is φ = 26220989184.

The previous prime is 79680506783. The next prime is 79680506819. The reversal of 79680506784 is 48760508697.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×79680506784² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79680506783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2371897 + ... + 2405255.

It is an arithmetic number, because the mean of its divisors is an integer number (2206764000).

Almost surely, 2^79680506784 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 79680506784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105924672000).

79680506784 is an abundant number, since it is smaller than the sum of its proper divisors (132168837216).

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

79680506784 is a wasteful number, since it uses less digits than its factorization.

79680506784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33690 (or 33682 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 79680506784 in words is "seventy-nine billion, six hundred eighty million, five hundred six thousand, seven hundred eighty-four".