255189908959 has 16 divisors (see below), whose sum is σ = 267167116800. Its totient is φ = 243286930656.

The previous prime is 255189908923. The next prime is 255189908977. The reversal of 255189908959 is 959809981552.

It is a cyclic number.

It is not a de Polignac number, because 255189908959 - 2¹³ = 255189900767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255189908999) 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, 18183157 + ... + 18197185.

It is an arithmetic number, because the mean of its divisors is an integer number (16697944800).

Almost surely, 2^255189908959 is an apocalyptic number.

255189908959 is a deficient number, since it is larger than the sum of its proper divisors (11977207841).

255189908959 is a wasteful number, since it uses less digits than its factorization.

255189908959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16614.

The product of its (nonzero) digits is 104976000, while the sum is 70.

The spelling of 255189908959 in words is "two hundred fifty-five billion, one hundred eighty-nine million, nine hundred eight thousand, nine hundred fifty-nine".