79788545280 has 864 divisors, whose sum is σ = 315790151040. Its totient is φ = 18473287680.

The previous prime is 79788545233. The next prime is 79788545293. The reversal of 79788545280 is 8254588797.

79788545280 is a `hidden beast` number, since 7 + 9 + 7 + 8 + 8 + 545 + 2 + 80 = 666.

It is a super-2 number, since 2×79788545280² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 152559099 + ... + 152559621.

It is an arithmetic number, because the mean of its divisors is an integer number (365497860).

Almost surely, 2^79788545280 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 79788545280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157895075520).

79788545280 is an abundant number, since it is smaller than the sum of its proper divisors (236001605760).

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

79788545280 is a wasteful number, since it uses less digits than its factorization.

79788545280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 79788545280 in words is "seventy-nine billion, seven hundred eighty-eight million, five hundred forty-five thousand, two hundred eighty".