723799399122 has 54 divisors (see below), whose sum is σ = 1577918375397. Its totient is φ = 239785373952.

The previous prime is 723799399117. The next prime is 723799399171. The reversal of 723799399122 is 221993997327.

723799399122 is a `hidden beast` number, since 7 + 2 + 37 + 99 + 399 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 672024492441 + 51774906681 = 819771^2 + 227541^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=601581.

It is a self number, because there is not a number n which added to its sum of digits gives 723799399122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 696630279 + ... + 696631317.

Almost surely, 2^723799399122 is an apocalyptic number.

723799399122 is an abundant number, since it is smaller than the sum of its proper divisors (854118976275).

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

723799399122 is an equidigital number, since it uses as much as digits as its factorization.

723799399122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472 (or 1237 counting only the distinct ones).

The product of its digits is 23147208, while the sum is 63.

The spelling of 723799399122 in words is "seven hundred twenty-three billion, seven hundred ninety-nine million, three hundred ninety-nine thousand, one hundred twenty-two".