72129584192 has 14 divisors (see below), whose sum is σ = 143132143758. Its totient is φ = 36064792064.

The previous prime is 72129584159. The next prime is 72129584207. The reversal of 72129584192 is 29148592127.

It can be written as a sum of positive squares in only one way, i.e., 49718296576 + 22411287616 = 222976^2 + 149704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72129584192.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563512313 + ... + 563512440.

Almost surely, 2^72129584192 is an apocalyptic number.

It is an amenable number.

72129584192 is a deficient number, since it is larger than the sum of its proper divisors (71002559566).

72129584192 is a wasteful number, since it uses less digits than its factorization.

72129584192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127024765 (or 1127024755 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The spelling of 72129584192 in words is "seventy-two billion, one hundred twenty-nine million, five hundred eighty-four thousand, one hundred ninety-two".