255842558399 has 16 divisors (see below), whose sum is σ = 262880782560. Its totient is φ = 248889463680.

The previous prime is 255842558357. The next prime is 255842558401. The reversal of 255842558399 is 993855248552.

It is a cyclic number.

It is not a de Polignac number, because 255842558399 - 2³² = 251547591103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255842558099) 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, 8573597 + ... + 8603385.

It is an arithmetic number, because the mean of its divisors is an integer number (16430048910).

Almost surely, 2^255842558399 is an apocalyptic number.

255842558399 is a deficient number, since it is larger than the sum of its proper divisors (7038224161).

255842558399 is a wasteful number, since it uses less digits than its factorization.

255842558399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31210.

The product of its digits is 155520000, while the sum is 65.

The spelling of 255842558399 in words is "two hundred fifty-five billion, eight hundred forty-two million, five hundred fifty-eight thousand, three hundred ninety-nine".