255568517090 has 8 divisors (see below), whose sum is σ = 460023330780. Its totient is φ = 102227406832.

The previous prime is 255568517053. The next prime is 255568517101. The reversal of 255568517090 is 90715865552.

It can be written as a sum of positive squares in 2 ways, for example, as 236078402641 + 19490114449 = 485879^2 + 139607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12778425845 + ... + 12778425864.

Almost surely, 2^255568517090 is an apocalyptic number.

255568517090 is a deficient number, since it is larger than the sum of its proper divisors (204454813690).

255568517090 is a wasteful number, since it uses less digits than its factorization.

255568517090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25556851716.

The product of its (nonzero) digits is 3780000, while the sum is 53.

The spelling of 255568517090 in words is "two hundred fifty-five billion, five hundred sixty-eight million, five hundred seventeen thousand, ninety".