79981588651824 has 120 divisors (see below), whose sum is σ = 224496467659152. Its totient is φ = 26582035376640.

The previous prime is 79981588651781. The next prime is 79981588651829. The reversal of 79981588651824 is 42815688518997.

79981588651824 is a `hidden beast` number, since 7 + 9 + 9 + 8 + 1 + 588 + 6 + 5 + 1 + 8 + 24 = 666.

It is not an unprimeable number, because it can be changed into a prime (79981588651829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 997970794 + ... + 998050934.

Almost surely, 2^{79981588651824} 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 79981588651824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112248233829576).

79981588651824 is an abundant number, since it is smaller than the sum of its proper divisors (144514879007328).

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

79981588651824 is a wasteful number, since it uses less digits than its factorization.

79981588651824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100475 (or 100466 counting only the distinct ones).

The product of its digits is 2786918400, while the sum is 81.

The spelling of 79981588651824 in words is "seventy-nine trillion, nine hundred eighty-one billion, five hundred eighty-eight million, six hundred fifty-one thousand, eight hundred twenty-four".