255778027808 has 24 divisors (see below), whose sum is σ = 505724221548. Its totient is φ = 127340130304.

The previous prime is 255778027807. The next prime is 255778027823. The reversal of 255778027808 is 808720877552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 233663958544 + 22114069264 = 483388^2 + 148708^2 .

It is not an unprimeable number, because it can be changed into a prime (255778027807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17145041 + ... + 17159952.

Almost surely, 2^255778027808 is an apocalyptic number.

It is an amenable number.

255778027808 is a deficient number, since it is larger than the sum of its proper divisors (249946193740).

255778027808 is a wasteful number, since it uses less digits than its factorization.

255778027808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34305236 (or 34305228 counting only the distinct ones).

The product of its (nonzero) digits is 17561600, while the sum is 59.

The spelling of 255778027808 in words is "two hundred fifty-five billion, seven hundred seventy-eight million, twenty-seven thousand, eight hundred eight".