72387709860 has 192 divisors, whose sum is σ = 218344170240. Its totient is φ = 17852989440.

The previous prime is 72387709853. The next prime is 72387709861. The reversal of 72387709860 is 6890778327.

It is a self number, because there is not a number n which added to its sum of digits gives 72387709860.

It is not an unprimeable number, because it can be changed into a prime (72387709861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34784020 + ... + 34786100.

It is an arithmetic number, because the mean of its divisors is an integer number (1137209220).

Almost surely, 2^72387709860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72387709860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109172085120).

72387709860 is an abundant number, since it is smaller than the sum of its proper divisors (145956460380).

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

72387709860 is a wasteful number, since it uses less digits than its factorization.

72387709860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686 (or 2684 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 57.

The spelling of 72387709860 in words is "seventy-two billion, three hundred eighty-seven million, seven hundred nine thousand, eight hundred sixty".