255665761366 has 8 divisors (see below), whose sum is σ = 383501311920. Its totient is φ = 127831990728.

The previous prime is 255665761301. The next prime is 255665761367. The reversal of 255665761366 is 663167566552.

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

It is a self number, because there is not a number n which added to its sum of digits gives 255665761366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255665761367) 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 3 ways as a sum of consecutive naturals, for example, 5215 + ... + 715093.

It is an arithmetic number, because the mean of its divisors is an integer number (47937663990).

Almost surely, 2^255665761366 is an apocalyptic number.

255665761366 is a deficient number, since it is larger than the sum of its proper divisors (127835550554).

255665761366 is a wasteful number, since it uses less digits than its factorization.

255665761366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889958.

The product of its digits is 40824000, while the sum is 58.

The spelling of 255665761366 in words is "two hundred fifty-five billion, six hundred sixty-five million, seven hundred sixty-one thousand, three hundred sixty-six".