72009910388 has 24 divisors (see below), whose sum is σ = 135718302720. Its totient is φ = 33233551200.

The previous prime is 72009910369. The next prime is 72009910393. The reversal of 72009910388 is 88301990027.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1764413 + ... + 1804763.

It is an arithmetic number, because the mean of its divisors is an integer number (5654929280).

Almost surely, 2^72009910388 is an apocalyptic number.

It is an amenable number.

72009910388 is a deficient number, since it is larger than the sum of its proper divisors (63708392332).

72009910388 is a wasteful number, since it uses less digits than its factorization.

72009910388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74687 (or 74685 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 72009910388 in words is "seventy-two billion, nine million, nine hundred ten thousand, three hundred eighty-eight".