72579308783280 has 320 divisors, whose sum is σ = 248012444187648. Its totient is φ = 17449423810560.

The previous prime is 72579308783257. The next prime is 72579308783281. The reversal of 72579308783280 is 8238780397527.

It is not an unprimeable number, because it can be changed into a prime (72579308783281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22171602 + ... + 25233678.

Almost surely, 2^{72579308783280} 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 72579308783280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124006222093824).

72579308783280 is an abundant number, since it is smaller than the sum of its proper divisors (175433135404368).

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

72579308783280 is a wasteful number, since it uses less digits than its factorization.

72579308783280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062284 (or 3062278 counting only the distinct ones).

The product of its (nonzero) digits is 284497920, while the sum is 69.

The spelling of 72579308783280 in words is "seventy-two trillion, five hundred seventy-nine billion, three hundred eight million, seven hundred eighty-three thousand, two hundred eighty".