79218924261776 has 80 divisors (see below), whose sum is σ = 167946403242240. Its totient is φ = 35978050298880.

The previous prime is 79218924261751. The next prime is 79218924261779. The reversal of 79218924261776 is 67716242981297.

It is a super-2 number, since 2×79218924261776² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79218924261779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491795 + ... + 12596813.

It is an arithmetic number, because the mean of its divisors is an integer number (2099330040528).

Almost surely, 2^{79218924261776} 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 79218924261776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83973201621120).

79218924261776 is an abundant number, since it is smaller than the sum of its proper divisors (88727478980464).

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

79218924261776 is a wasteful number, since it uses less digits than its factorization.

79218924261776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12105544 (or 12105538 counting only the distinct ones).

The product of its digits is 256048128, while the sum is 71.

The spelling of 79218924261776 in words is "seventy-nine trillion, two hundred eighteen billion, nine hundred twenty-four million, two hundred sixty-one thousand, seven hundred seventy-six".