255793947903 has 24 divisors (see below), whose sum is σ = 401552191040. Its totient is φ = 155967508800.

The previous prime is 255793947847. The next prime is 255793947911. The reversal of 255793947903 is 309749397552.

255793947903 is a `hidden beast` number, since 2 + 557 + 9 + 3 + 9 + 4 + 79 + 0 + 3 = 666.

It is not a de Polignac number, because 255793947903 - 2⁹ = 255793947391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255793947203) 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 23 ways as a sum of consecutive naturals, for example, 10016023 + ... + 10041528.

Almost surely, 2^255793947903 is an apocalyptic number.

255793947903 is a deficient number, since it is larger than the sum of its proper divisors (145758243137).

255793947903 is a wasteful number, since it uses less digits than its factorization.

255793947903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20057679 (or 20057676 counting only the distinct ones).

The product of its (nonzero) digits is 64297800, while the sum is 63.

The spelling of 255793947903 in words is "two hundred fifty-five billion, seven hundred ninety-three million, nine hundred forty-seven thousand, nine hundred three".