79553897280 has 1120 divisors, whose sum is σ = 337061007360. Its totient is φ = 17662095360.

The previous prime is 79553897279. The next prime is 79553897303. The reversal of 79553897280 is 8279835597.

79553897280 is a `hidden beast` number, since 7 + 9 + 5 + 538 + 97 + 2 + 8 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 626408577 + ... + 626408703.

It is an arithmetic number, because the mean of its divisors is an integer number (300947328).

Almost surely, 2^79553897280 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 79553897280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168530503680).

79553897280 is an abundant number, since it is smaller than the sum of its proper divisors (257507110080).

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

79553897280 is a wasteful number, since it uses less digits than its factorization.

79553897280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 63.

The spelling of 79553897280 in words is "seventy-nine billion, five hundred fifty-three million, eight hundred ninety-seven thousand, two hundred eighty".