72797512080 has 40 divisors (see below), whose sum is σ = 225672288192. Its totient is φ = 19412669824.

The previous prime is 72797512063. The next prime is 72797512093. The reversal of 72797512080 is 8021579727.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151661244 + ... + 151661723.

Almost surely, 2^72797512080 is an apocalyptic number.

It is an amenable number.

72797512080 is an abundant number, since it is smaller than the sum of its proper divisors (152874776112).

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

72797512080 is a wasteful number, since it uses less digits than its factorization.

72797512080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303322983 (or 303322977 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 48.

The spelling of 72797512080 in words is "seventy-two billion, seven hundred ninety-seven million, five hundred twelve thousand, eighty".