255579122567 has 4 divisors (see below), whose sum is σ = 255666086760. Its totient is φ = 255492158376.

The previous prime is 255579122563. The next prime is 255579122587. The reversal of 255579122567 is 765221975552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255579122567 - 2² = 255579122563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255579122563) 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, 43477688 + ... + 43483565.

It is an arithmetic number, because the mean of its divisors is an integer number (63916521690).

Almost surely, 2^255579122567 is an apocalyptic number.

255579122567 is a deficient number, since it is larger than the sum of its proper divisors (86964193).

255579122567 is an equidigital number, since it uses as much as digits as its factorization.

255579122567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86964192.

The product of its digits is 13230000, while the sum is 56.

The spelling of 255579122567 in words is "two hundred fifty-five billion, five hundred seventy-nine million, one hundred twenty-two thousand, five hundred sixty-seven".