79604218836 has 72 divisors (see below), whose sum is σ = 213796051560. Its totient is φ = 24973817088.

The previous prime is 79604218831. The next prime is 79604218861. The reversal of 79604218836 is 63881240697.

79604218836 is a `hidden beast` number, since 7 + 9 + 604 + 21 + 8 + 8 + 3 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22653260100 + 56950958736 = 150510^2 + 238644^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79604218831) 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, 48171 + ... + 401906.

It is an arithmetic number, because the mean of its divisors is an integer number (2969389605).

Almost surely, 2^79604218836 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 79604218836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106898025780).

79604218836 is an abundant number, since it is smaller than the sum of its proper divisors (134191832724).

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

79604218836 is a wasteful number, since it uses less digits than its factorization.

79604218836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450138 (or 450099 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 79604218836 in words is "seventy-nine billion, six hundred four million, two hundred eighteen thousand, eight hundred thirty-six".