255263237457761 has 64 divisors (see below), whose sum is σ = 296896986247680. Its totient is φ = 217435094876160.

The previous prime is 255263237457751. The next prime is 255263237457791. The reversal of 255263237457761 is 167754732362552.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255263237457761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255263237457751) 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 63 ways as a sum of consecutive naturals, for example, 20078907941 + ... + 20078920653.

It is an arithmetic number, because the mean of its divisors is an integer number (4639015410120).

Almost surely, 2^{255263237457761} is an apocalyptic number.

It is an amenable number.

255263237457761 is a deficient number, since it is larger than the sum of its proper divisors (41633748789919).

255263237457761 is a wasteful number, since it uses less digits than its factorization.

255263237457761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15786.

The product of its digits is 444528000, while the sum is 65.

The spelling of 255263237457761 in words is "two hundred fifty-five trillion, two hundred sixty-three billion, two hundred thirty-seven million, four hundred fifty-seven thousand, seven hundred sixty-one".