72139384650 has 24 divisors (see below), whose sum is σ = 178905674304. Its totient is φ = 19237169200.

The previous prime is 72139384607. The next prime is 72139384651. The reversal of 72139384650 is 5648393127.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 72139384650.

It is not an unprimeable number, because it can be changed into a prime (72139384651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240464466 + ... + 240464765.

It is an arithmetic number, because the mean of its divisors is an integer number (7454403096).

It is a 1-persistent number, because it is pandigital, but 2⋅72139384650 = 144278769300 is not.

Almost surely, 2^72139384650 is an apocalyptic number.

72139384650 is an abundant number, since it is smaller than the sum of its proper divisors (106766289654).

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

72139384650 is a wasteful number, since it uses less digits than its factorization.

72139384650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480929246 (or 480929241 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 72139384650 in words is "seventy-two billion, one hundred thirty-nine million, three hundred eighty-four thousand, six hundred fifty".