72872075844 has 48 divisors (see below), whose sum is σ = 195022051840. Its totient is φ = 23507120160.

The previous prime is 72872075839. The next prime is 72872075867. The reversal of 72872075844 is 44857027827.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 10879579 + ... + 10886274.

Almost surely, 2^72872075844 is an apocalyptic number.

It is an amenable number.

72872075844 is an abundant number, since it is smaller than the sum of its proper divisors (122149975996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72872075844 is a wasteful number, since it uses less digits than its factorization.

72872075844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21765897 (or 21765889 counting only the distinct ones).

The product of its (nonzero) digits is 7024640, while the sum is 54.

The spelling of 72872075844 in words is "seventy-two billion, eight hundred seventy-two million, seventy-five thousand, eight hundred forty-four".