72437689572 has 24 divisors (see below), whose sum is σ = 176370027456. Its totient is φ = 23096074848.

The previous prime is 72437689567. The next prime is 72437689589. The reversal of 72437689572 is 27598673427.

It is a happy number.

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, 131227423 + ... + 131227974.

It is an arithmetic number, because the mean of its divisors is an integer number (7348751144).

Almost surely, 2^72437689572 is an apocalyptic number.

It is an amenable number.

72437689572 is an abundant number, since it is smaller than the sum of its proper divisors (103932337884).

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

72437689572 is a wasteful number, since it uses less digits than its factorization.

72437689572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262455427 (or 262455425 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 60.

The spelling of 72437689572 in words is "seventy-two billion, four hundred thirty-seven million, six hundred eighty-nine thousand, five hundred seventy-two".