255279260656 has 80 divisors (see below), whose sum is σ = 579388702464. Its totient is φ = 106679688192.

The previous prime is 255279260641. The next prime is 255279260737. The reversal of 255279260656 is 656062972552.

It is a junction number, because it is equal to n+sod(n) for n = 255279260597 and 255279260606.

It is a congruent number.

It is an unprimeable number.

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, 2811195 + ... + 2900581.

Almost surely, 2^255279260656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255279260656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289694351232).

255279260656 is an abundant number, since it is smaller than the sum of its proper divisors (324109441808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255279260656 is a wasteful number, since it uses less digits than its factorization.

255279260656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90038 (or 90032 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 255279260656 in words is "two hundred fifty-five billion, two hundred seventy-nine million, two hundred sixty thousand, six hundred fifty-six".