255564428833 has 8 divisors (see below), whose sum is σ = 298287965952. Its totient is φ = 214394474976.

The previous prime is 255564428759. The next prime is 255564428837. The reversal of 255564428833 is 338824465552.

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 255564428833 - 2³⁷ = 118125475361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255564428837) 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, 388395460 + ... + 388396117.

It is an arithmetic number, because the mean of its divisors is an integer number (37285995744).

Almost surely, 2^255564428833 is an apocalyptic number.

It is an amenable number.

255564428833 is a deficient number, since it is larger than the sum of its proper divisors (42723537119).

255564428833 is an equidigital number, since it uses as much as digits as its factorization.

255564428833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776791631.

The product of its digits is 27648000, while the sum is 55.

The spelling of 255564428833 in words is "two hundred fifty-five billion, five hundred sixty-four million, four hundred twenty-eight thousand, eight hundred thirty-three".