72572212144 has 20 divisors (see below), whose sum is σ = 140630173200. Its totient is φ = 36280554560.

The previous prime is 72572212121. The next prime is 72572212157. The reversal of 72572212144 is 44121227527.

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, 238087 + ... + 449254.

It is an arithmetic number, because the mean of its divisors is an integer number (7031508660).

Almost surely, 2^72572212144 is an apocalyptic number.

It is an amenable number.

72572212144 is a deficient number, since it is larger than the sum of its proper divisors (68057961056).

72572212144 is a wasteful number, since it uses less digits than its factorization.

72572212144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693948 (or 693942 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The spelling of 72572212144 in words is "seventy-two billion, five hundred seventy-two million, two hundred twelve thousand, one hundred forty-four".