72186682912 has 12 divisors (see below), whose sum is σ = 142117532046. Its totient is φ = 36093341440.

The previous prime is 72186682907. The next prime is 72186682949. The reversal of 72186682912 is 21928668127.

It can be written as a sum of positive squares in only one way, i.e., 43532318736 + 28654364176 = 208644^2 + 169276^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72186682912.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127916889 + ... + 1127916952.

Almost surely, 2^72186682912 is an apocalyptic number.

It is an amenable number.

72186682912 is a deficient number, since it is larger than the sum of its proper divisors (69930849134).

72186682912 is a wasteful number, since it uses less digits than its factorization.

72186682912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255833851 (or 2255833843 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The spelling of 72186682912 in words is "seventy-two billion, one hundred eighty-six million, six hundred eighty-two thousand, nine hundred twelve".