255774728893 has 16 divisors (see below), whose sum is σ = 262636992000. Its totient is φ = 248993769024.

The previous prime is 255774728843. The next prime is 255774728899. The reversal of 255774728893 is 398827477552.

It is a cyclic number.

It is not a de Polignac number, because 255774728893 - 2¹⁷ = 255774597821 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 (255774728899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4547380 + ... + 4603282.

It is an arithmetic number, because the mean of its divisors is an integer number (16414812000).

Almost surely, 2^255774728893 is an apocalyptic number.

It is an amenable number.

255774728893 is a deficient number, since it is larger than the sum of its proper divisors (6862263107).

255774728893 is a wasteful number, since it uses less digits than its factorization.

255774728893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56628.

The product of its digits is 237081600, while the sum is 67.

The spelling of 255774728893 in words is "two hundred fifty-five billion, seven hundred seventy-four million, seven hundred twenty-eight thousand, eight hundred ninety-three".