255017605365811 has 2 divisors, whose sum is σ = 255017605365812. Its totient is φ = 255017605365810.

The previous prime is 255017605365773. The next prime is 255017605365829. The reversal of 255017605365811 is 118563506710552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255017605365811 - 2¹⁹ = 255017604841523 is a prime.

It is a super-3 number, since 3×255017605365811³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (255017605365011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127508802682905 + 127508802682906.

It is an arithmetic number, because the mean of its divisors is an integer number (127508802682906).

Almost surely, 2^{255017605365811} is an apocalyptic number.

255017605365811 is a deficient number, since it is larger than the sum of its proper divisors (1).

255017605365811 is an equidigital number, since it uses as much as digits as its factorization.

255017605365811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560000, while the sum is 55.

The spelling of 255017605365811 in words is "two hundred fifty-five trillion, seventeen billion, six hundred five million, three hundred sixty-five thousand, eight hundred eleven".