72774657580 has 12 divisors (see below), whose sum is σ = 152826780960. Its totient is φ = 29109863024.

The previous prime is 72774657533. The next prime is 72774657583. The reversal of 72774657580 is 8575647727.

It is not an unprimeable number, because it can be changed into a prime (72774657583) 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 3 ways as a sum of consecutive naturals, for example, 1819366420 + ... + 1819366459.

It is an arithmetic number, because the mean of its divisors is an integer number (12735565080).

Almost surely, 2^72774657580 is an apocalyptic number.

It is an amenable number.

72774657580 is an abundant number, since it is smaller than the sum of its proper divisors (80052123380).

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

72774657580 is a wasteful number, since it uses less digits than its factorization.

72774657580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638732888 (or 3638732886 counting only the distinct ones).

The product of its (nonzero) digits is 23049600, while the sum is 58.

The spelling of 72774657580 in words is "seventy-two billion, seven hundred seventy-four million, six hundred fifty-seven thousand, five hundred eighty".