255757661212218 has 64 divisors (see below), whose sum is σ = 576070486769664. Its totient is φ = 74995315416000.

The previous prime is 255757661212213. The next prime is 255757661212219. The reversal of 255757661212218 is 812212166757552.

It is not an unprimeable number, because it can be changed into a prime (255757661212213) 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 31 ways as a sum of consecutive naturals, for example, 16389580 + ... + 27930872.

It is an arithmetic number, because the mean of its divisors is an integer number (9001101355776).

Almost surely, 2^{255757661212218} is an apocalyptic number.

255757661212218 is an abundant number, since it is smaller than the sum of its proper divisors (320312825557446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255757661212218 is a wasteful number, since it uses less digits than its factorization.

255757661212218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11552171.

The product of its digits is 28224000, while the sum is 60.

The spelling of 255757661212218 in words is "two hundred fifty-five trillion, seven hundred fifty-seven billion, six hundred sixty-one million, two hundred twelve thousand, two hundred eighteen".