79571717280 has 960 divisors, whose sum is σ = 333923990400. Its totient is φ = 17627258880.

The previous prime is 79571717249. The next prime is 79571717293. The reversal of 79571717280 is 8271717597.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 159 ways as a sum of consecutive naturals, for example, 78550054 + ... + 78551066.

It is an arithmetic number, because the mean of its divisors is an integer number (347837490).

Almost surely, 2^79571717280 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 79571717280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166961995200).

79571717280 is an abundant number, since it is smaller than the sum of its proper divisors (254352273120).

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

79571717280 is a wasteful number, since it uses less digits than its factorization.

79571717280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 1728720, while the sum is 54.

The spelling of 79571717280 in words is "seventy-nine billion, five hundred seventy-one million, seven hundred seventeen thousand, two hundred eighty".