72339411280 has 20 divisors (see below), whose sum is σ = 168189131412. Its totient is φ = 28935764480.

The previous prime is 72339411271. The next prime is 72339411283. The reversal of 72339411280 is 8211493327.

It can be written as a sum of positive squares in 2 ways, for example, as 23856655936 + 48482755344 = 154456^2 + 220188^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72339411283) 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 3 ways as a sum of consecutive naturals, for example, 452121241 + ... + 452121400.

Almost surely, 2^72339411280 is an apocalyptic number.

It is an amenable number.

72339411280 is an abundant number, since it is smaller than the sum of its proper divisors (95849720132).

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

72339411280 is a wasteful number, since it uses less digits than its factorization.

72339411280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904242654 (or 904242648 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 72339411280 in words is "seventy-two billion, three hundred thirty-nine million, four hundred eleven thousand, two hundred eighty".