72861233612 has 12 divisors (see below), whose sum is σ = 128211619536. Its totient is φ = 36229342320.

The previous prime is 72861233609. The next prime is 72861233651. The reversal of 72861233612 is 21633216827.

It is a self number, because there is not a number n which added to its sum of digits gives 72861233612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50317808 + ... + 50319255.

It is an arithmetic number, because the mean of its divisors is an integer number (10684301628).

Almost surely, 2^72861233612 is an apocalyptic number.

It is an amenable number.

72861233612 is a deficient number, since it is larger than the sum of its proper divisors (55350385924).

72861233612 is a wasteful number, since it uses less digits than its factorization.

72861233612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100637248 (or 100637246 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The spelling of 72861233612 in words is "seventy-two billion, eight hundred sixty-one million, two hundred thirty-three thousand, six hundred twelve".