255921683471 has 4 divisors (see below), whose sum is σ = 255998241312. Its totient is φ = 255845125632.

The previous prime is 255921683443. The next prime is 255921683483. The reversal of 255921683471 is 174386129552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255921683471 is a prime.

It is a super-3 number, since 3×255921683471³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255921683401) 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 3 ways as a sum of consecutive naturals, for example, 38273906 + ... + 38280591.

It is an arithmetic number, because the mean of its divisors is an integer number (63999560328).

Almost surely, 2^255921683471 is an apocalyptic number.

255921683471 is a deficient number, since it is larger than the sum of its proper divisors (76557841).

255921683471 is an equidigital number, since it uses as much as digits as its factorization.

255921683471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76557840.

The product of its digits is 3628800, while the sum is 53.

The spelling of 255921683471 in words is "two hundred fifty-five billion, nine hundred twenty-one million, six hundred eighty-three thousand, four hundred seventy-one".