72775447647360 has 256 divisors, whose sum is σ = 234545792140800. Its totient is φ = 19191752294400.

The previous prime is 72775447647349. The next prime is 72775447647391. The reversal of 72775447647360 is 6374674457727.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239911785 + ... + 240214935.

It is an arithmetic number, because the mean of its divisors is an integer number (916194500550).

Almost surely, 2^{72775447647360} 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 72775447647360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117272896070400).

72775447647360 is an abundant number, since it is smaller than the sum of its proper divisors (161770344493440).

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

72775447647360 is a wasteful number, since it uses less digits than its factorization.

72775447647360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304559 (or 304547 counting only the distinct ones).

The product of its (nonzero) digits is 1161699840, while the sum is 69.

The spelling of 72775447647360 in words is "seventy-two trillion, seven hundred seventy-five billion, four hundred forty-seven million, six hundred forty-seven thousand, three hundred sixty".