255465718687 has 2 divisors, whose sum is σ = 255465718688. Its totient is φ = 255465718686.

The previous prime is 255465718649. The next prime is 255465718721. The reversal of 255465718687 is 786817564552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255465718687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255465718987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127732859343 + 127732859344.

It is an arithmetic number, because the mean of its divisors is an integer number (127732859344).

Almost surely, 2^255465718687 is an apocalyptic number.

255465718687 is a deficient number, since it is larger than the sum of its proper divisors (1).

255465718687 is an equidigital number, since it uses as much as digits as its factorization.

255465718687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896000, while the sum is 64.

The spelling of 255465718687 in words is "two hundred fifty-five billion, four hundred sixty-five million, seven hundred eighteen thousand, six hundred eighty-seven".