255850337391 has 16 divisors (see below), whose sum is σ = 372273228288. Its totient is φ = 155007776000.

The previous prime is 255850337387. The next prime is 255850337401. The reversal of 255850337391 is 193733058552.

It is a happy number.

It is not a de Polignac number, because 255850337391 - 2² = 255850337387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255850337321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1227810 + ... + 1420991.

It is an arithmetic number, because the mean of its divisors is an integer number (23267076768).

Almost surely, 2^255850337391 is an apocalyptic number.

255850337391 is a deficient number, since it is larger than the sum of its proper divisors (116422890897).

255850337391 is a wasteful number, since it uses less digits than its factorization.

255850337391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651742.

The product of its (nonzero) digits is 3402000, while the sum is 51.

The spelling of 255850337391 in words is "two hundred fifty-five billion, eight hundred fifty million, three hundred thirty-seven thousand, three hundred ninety-one".