255017605366667 has 48 divisors (see below), whose sum is σ = 303242203756800. Its totient is φ = 213030788382720.

The previous prime is 255017605366639. The next prime is 255017605366673. The reversal of 255017605366667 is 766663506710552.

It is a happy number.

It is not a de Polignac number, because 255017605366667 - 2¹⁸ = 255017605104523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255017605366697) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 305400998 + ... + 306234884.

It is an arithmetic number, because the mean of its divisors is an integer number (6317545911600).

Almost surely, 2^{255017605366667} is an apocalyptic number.

255017605366667 is a deficient number, since it is larger than the sum of its proper divisors (48224598390133).

255017605366667 is a wasteful number, since it uses less digits than its factorization.

255017605366667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834804 (or 834793 counting only the distinct ones).

The product of its (nonzero) digits is 285768000, while the sum is 65.

The spelling of 255017605366667 in words is "two hundred fifty-five trillion, seventeen billion, six hundred five million, three hundred sixty-six thousand, six hundred sixty-seven".