79308893664 has 1152 divisors, whose sum is σ = 328424398848. Its totient is φ = 18147317760.

The previous prime is 79308893639. The next prime is 79308893693. The reversal of 79308893664 is 46639880397.

It is a super-2 number, since 2×79308893664² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 179026627 + ... + 179027069.

It is an arithmetic number, because the mean of its divisors is an integer number (285090624).

Almost surely, 2^79308893664 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 79308893664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164212199424).

79308893664 is an abundant number, since it is smaller than the sum of its proper divisors (249115505184).

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

79308893664 is a wasteful number, since it uses less digits than its factorization.

79308893664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 79308893664 in words is "seventy-nine billion, three hundred eight million, eight hundred ninety-three thousand, six hundred sixty-four".