256622372323372 has 72 divisors (see below), whose sum is σ = 496174813318800. Its totient is φ = 115169793747840.

The previous prime is 256622372323333. The next prime is 256622372323403. The reversal of 256622372323372 is 273323273226652.

It is a super-2 number, since 2×256622372323372² (a number of 30 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 182138518 + ... + 183542050.

It is an arithmetic number, because the mean of its divisors is an integer number (6891316851650).

Almost surely, 2^{256622372323372} is an apocalyptic number.

256622372323372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256622372323372 is a deficient number, since it is larger than the sum of its proper divisors (239552440995428).

256622372323372 is a wasteful number, since it uses less digits than its factorization.

256622372323372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404031 (or 1403862 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 55.

The spelling of 256622372323372 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred seventy-two million, three hundred twenty-three thousand, three hundred seventy-two".