255517019318 has 32 divisors (see below), whose sum is σ = 427346731008. Its totient is φ = 113606539200.

The previous prime is 255517019311. The next prime is 255517019323. The reversal of 255517019318 is 813910715552.

255517019318 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×255517019318² (a number of 24 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 445655 + ... + 842402.

It is an arithmetic number, because the mean of its divisors is an integer number (13354585344).

Almost surely, 2^255517019318 is an apocalyptic number.

255517019318 is a deficient number, since it is larger than the sum of its proper divisors (171829711690).

255517019318 is a wasteful number, since it uses less digits than its factorization.

255517019318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288268.

The product of its (nonzero) digits is 378000, while the sum is 47.

The spelling of 255517019318 in words is "two hundred fifty-five billion, five hundred seventeen million, nineteen thousand, three hundred eighteen".