255922781673942 has 48 divisors (see below), whose sum is σ = 573622719452640. Its totient is φ = 82365566242176.

The previous prime is 255922781673931. The next prime is 255922781673943. The reversal of 255922781673942 is 249376187229552.

255922781673942 is a `hidden beast` number, since 2 + 5 + 5 + 9 + 2 + 2 + 78 + 167 + 394 + 2 = 666.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255922781673943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123033903 + ... + 125096709.

It is an arithmetic number, because the mean of its divisors is an integer number (11950473321930).

Almost surely, 2^{255922781673942} is an apocalyptic number.

255922781673942 is an abundant number, since it is smaller than the sum of its proper divisors (317699937778698).

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

255922781673942 is a wasteful number, since it uses less digits than its factorization.

255922781673942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300517 (or 2300514 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 72.

The spelling of 255922781673942 in words is "two hundred fifty-five trillion, nine hundred twenty-two billion, seven hundred eighty-one million, six hundred seventy-three thousand, nine hundred forty-two".