72399356988 has 24 divisors (see below), whose sum is σ = 193064952192. Its totient is φ = 20685530544.

The previous prime is 72399356983. The next prime is 72399357001. The reversal of 72399356988 is 88965399327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72399356983) 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 7 ways as a sum of consecutive naturals, for example, 430948470 + ... + 430948637.

It is an arithmetic number, because the mean of its divisors is an integer number (8044373008).

Almost surely, 2^72399356988 is an apocalyptic number.

It is an amenable number.

72399356988 is an abundant number, since it is smaller than the sum of its proper divisors (120665595204).

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

72399356988 is a wasteful number, since it uses less digits than its factorization.

72399356988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861897121 (or 861897119 counting only the distinct ones).

The product of its digits is 176359680, while the sum is 69.

The spelling of 72399356988 in words is "seventy-two billion, three hundred ninety-nine million, three hundred fifty-six thousand, nine hundred eighty-eight".