72921710180 has 96 divisors (see below), whose sum is σ = 168917253120. Its totient is φ = 26223223680.

The previous prime is 72921710153. The next prime is 72921710189. The reversal of 72921710180 is 8101712927.

It is not an unprimeable number, because it can be changed into a prime (72921710189) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8038007 + ... + 8047073.

It is an arithmetic number, because the mean of its divisors is an integer number (1759554720).

Almost surely, 2^72921710180 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 72921710180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84458626560).

72921710180 is an abundant number, since it is smaller than the sum of its proper divisors (95995542940).

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

72921710180 is a wasteful number, since it uses less digits than its factorization.

72921710180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489 (or 9487 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 38.

The spelling of 72921710180 in words is "seventy-two billion, nine hundred twenty-one million, seven hundred ten thousand, one hundred eighty".