255278715765 has 16 divisors (see below), whose sum is σ = 432472177728. Its totient is φ = 128139904256.

The previous prime is 255278715709. The next prime is 255278715767. The reversal of 255278715765 is 567517872552.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 255278715765 - 2¹⁸ = 255278453621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255278715699 and 255278715708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255278715767) 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 15 ways as a sum of consecutive naturals, for example, 500546247 + ... + 500546756.

It is an arithmetic number, because the mean of its divisors is an integer number (27029511108).

Almost surely, 2^255278715765 is an apocalyptic number.

It is an amenable number.

255278715765 is a deficient number, since it is larger than the sum of its proper divisors (177193461963).

255278715765 is a wasteful number, since it uses less digits than its factorization.

255278715765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001093028.

The product of its digits is 41160000, while the sum is 60.

The spelling of 255278715765 in words is "two hundred fifty-five billion, two hundred seventy-eight million, seven hundred fifteen thousand, seven hundred sixty-five".