79980606720 has 324 divisors, whose sum is σ = 321906361140. Its totient is φ = 18281152512.

The previous prime is 79980606691. The next prime is 79980606721. The reversal of 79980606720 is 2760608997.

79980606720 is a `hidden beast` number, since 7 + 9 + 9 + 8 + 0 + 606 + 7 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45953639424 + 34026967296 = 214368^2 + 184464^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79980606721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 493636 + ... + 635324.

Almost surely, 2^79980606720 is an apocalyptic number.

79980606720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79980606720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160953180570).

79980606720 is an abundant number, since it is smaller than the sum of its proper divisors (241925754420).

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

79980606720 is a wasteful number, since it uses less digits than its factorization.

79980606720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141730 (or 141706 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 79980606720 in words is "seventy-nine billion, nine hundred eighty million, six hundred six thousand, seven hundred twenty".