255348568637 has 2 divisors, whose sum is σ = 255348568638. Its totient is φ = 255348568636.

The previous prime is 255348568633. The next prime is 255348568723. The reversal of 255348568637 is 736865843552.

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., 239389047076 + 15959521561 = 489274^2 + 126331^2 .

It is a cyclic number.

It is not a de Polignac number, because 255348568637 - 2² = 255348568633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255348568637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255348568633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127674284318 + 127674284319.

It is an arithmetic number, because the mean of its divisors is an integer number (127674284319).

Almost surely, 2^255348568637 is an apocalyptic number.

It is an amenable number.

255348568637 is a deficient number, since it is larger than the sum of its proper divisors (1).

255348568637 is an equidigital number, since it uses as much as digits as its factorization.

255348568637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152000, while the sum is 62.

The spelling of 255348568637 in words is "two hundred fifty-five billion, three hundred forty-eight million, five hundred sixty-eight thousand, six hundred thirty-seven".