255752761797457 has 2 divisors, whose sum is σ = 255752761797458. Its totient is φ = 255752761797456.

The previous prime is 255752761797433. The next prime is 255752761797493. The reversal of 255752761797457 is 754797167257552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155179863608641 + 100572898188816 = 12457121^2 + 10028604^2 .

It is a cyclic number.

It is not a de Polignac number, because 255752761797457 - 2⁷ = 255752761797329 is a prime.

It is not a weakly prime, because it can be changed into another prime (255752761797557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127876380898728 + 127876380898729.

It is an arithmetic number, because the mean of its divisors is an integer number (127876380898729).

Almost surely, 2^{255752761797457} is an apocalyptic number.

It is an amenable number.

255752761797457 is a deficient number, since it is larger than the sum of its proper divisors (1).

255752761797457 is an equidigital number, since it uses as much as digits as its factorization.

255752761797457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9075780000, while the sum is 79.

The spelling of 255752761797457 in words is "two hundred fifty-five trillion, seven hundred fifty-two billion, seven hundred sixty-one million, seven hundred ninety-seven thousand, four hundred fifty-seven".