72150007938 has 16 divisors (see below), whose sum is σ = 152788252320. Its totient is φ = 22635296576.

The previous prime is 72150007913. The next prime is 72150007939. The reversal of 72150007938 is 83970005127.

It is a self number, because there is not a number n which added to its sum of digits gives 72150007938.

It is not an unprimeable number, because it can be changed into a prime (72150007939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353676408 + ... + 353676611.

It is an arithmetic number, because the mean of its divisors is an integer number (9549265770).

Almost surely, 2^72150007938 is an apocalyptic number.

72150007938 is an abundant number, since it is smaller than the sum of its proper divisors (80638244382).

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

72150007938 is a wasteful number, since it uses less digits than its factorization.

72150007938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707353041.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 72150007938 in words is "seventy-two billion, one hundred fifty million, seven thousand, nine hundred thirty-eight".