255891373697 has 8 divisors (see below), whose sum is σ = 268228736160. Its totient is φ = 243844302240.

The previous prime is 255891373679. The next prime is 255891373729. The reversal of 255891373697 is 796373198552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255891373697 - 2¹⁴ = 255891357313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255891373607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72570947 + ... + 72574472.

It is an arithmetic number, because the mean of its divisors is an integer number (33528592020).

Almost surely, 2^255891373697 is an apocalyptic number.

It is an amenable number.

255891373697 is a deficient number, since it is larger than the sum of its proper divisors (12337362463).

255891373697 is a wasteful number, since it uses less digits than its factorization.

255891373697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145145503.

The product of its digits is 85730400, while the sum is 65.

The spelling of 255891373697 in words is "two hundred fifty-five billion, eight hundred ninety-one million, three hundred seventy-three thousand, six hundred ninety-seven".