72195894212 has 48 divisors (see below), whose sum is σ = 139291639872. Its totient is φ = 32530861440.

The previous prime is 72195894167. The next prime is 72195894227. The reversal of 72195894212 is 21249859127.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5652938 + ... + 5665694.

It is an arithmetic number, because the mean of its divisors is an integer number (2901909164).

Almost surely, 2^72195894212 is an apocalyptic number.

It is an amenable number.

72195894212 is a deficient number, since it is larger than the sum of its proper divisors (67095745660).

72195894212 is a wasteful number, since it uses less digits than its factorization.

72195894212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15348 (or 15346 counting only the distinct ones).

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

The spelling of 72195894212 in words is "seventy-two billion, one hundred ninety-five million, eight hundred ninety-four thousand, two hundred twelve".