79696173564 has 384 divisors, whose sum is σ = 251606476800. Its totient is φ = 21335408640.

The previous prime is 79696173563. The next prime is 79696173637. The reversal of 79696173564 is 46537169697.

79696173564 is a `hidden beast` number, since 7 + 9 + 6 + 9 + 61 + 7 + 3 + 564 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79696173563) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 124330684 + ... + 124331324.

It is an arithmetic number, because the mean of its divisors is an integer number (655225200).

Almost surely, 2^79696173564 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 79696173564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125803238400).

79696173564 is an abundant number, since it is smaller than the sum of its proper divisors (171910303236).

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

79696173564 is a wasteful number, since it uses less digits than its factorization.

79696173564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 842 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 63.

The spelling of 79696173564 in words is "seventy-nine billion, six hundred ninety-six million, one hundred seventy-three thousand, five hundred sixty-four".