255517019317 has 8 divisors (see below), whose sum is σ = 309197065536. Its totient is φ = 206131376832.

The previous prime is 255517019311. The next prime is 255517019323. The reversal of 255517019317 is 713910715552.

255517019317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (255517019311) and next prime (255517019323).

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 255517019317 - 2⁷ = 255517019189 is a prime.

It is a super-2 number, since 2×255517019317² (a number of 24 digits) contains 22 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 (255517019311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073600803 + ... + 1073601040.

It is an arithmetic number, because the mean of its divisors is an integer number (38649633192).

Almost surely, 2^255517019317 is an apocalyptic number.

It is an amenable number.

255517019317 is a deficient number, since it is larger than the sum of its proper divisors (53680046219).

255517019317 is a wasteful number, since it uses less digits than its factorization.

255517019317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147201867.

The product of its (nonzero) digits is 330750, while the sum is 46.

The spelling of 255517019317 in words is "two hundred fifty-five billion, five hundred seventeen million, nineteen thousand, three hundred seventeen".