72757700080 has 40 divisors (see below), whose sum is σ = 182174090112. Its totient is φ = 26864381184.

The previous prime is 72757700051. The next prime is 72757700089. The reversal of 72757700080 is 8000775727.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72757700089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34978624 + ... + 34980703.

Almost surely, 2^72757700080 is an apocalyptic number.

It is an amenable number.

72757700080 is an abundant number, since it is smaller than the sum of its proper divisors (109416390032).

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

72757700080 is a wasteful number, since it uses less digits than its factorization.

72757700080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69959353 (or 69959347 counting only the distinct ones).

The product of its (nonzero) digits is 192080, while the sum is 43.

The spelling of 72757700080 in words is "seventy-two billion, seven hundred fifty-seven million, seven hundred thousand, eighty".