722399938992 has 160 divisors (see below), whose sum is σ = 2091054735360. Its totient is φ = 238769959680.

The previous prime is 722399938973. The next prime is 722399939033. The reversal of 722399938992 is 299839993227.

722399938992 is a `hidden beast` number, since 7 + 2 + 239 + 9 + 9 + 389 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 722399938992.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165193318 + ... + 165197690.

It is an arithmetic number, because the mean of its divisors is an integer number (13069092096).

Almost surely, 2^722399938992 is an apocalyptic number.

722399938992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722399938992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045527367680).

722399938992 is an abundant number, since it is smaller than the sum of its proper divisors (1368654796368).

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

722399938992 is a wasteful number, since it uses less digits than its factorization.

722399938992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7528 (or 7516 counting only the distinct ones).

The product of its digits is 238085568, while the sum is 72.

The spelling of 722399938992 in words is "seven hundred twenty-two billion, three hundred ninety-nine million, nine hundred thirty-eight thousand, nine hundred ninety-two".