255784280761 has 16 divisors (see below), whose sum is σ = 268087569408. Its totient is φ = 243745286400.

The previous prime is 255784280747. The next prime is 255784280767. The reversal of 255784280761 is 167082487552.

It is a cyclic number.

It is not a de Polignac number, because 255784280761 - 2⁵ = 255784280729 is a prime.

It is a super-5 number, since 5×255784280761⁵ (a number of 58 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255784280767) 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, 1304676 + ... + 1487866.

It is an arithmetic number, because the mean of its divisors is an integer number (16755473088).

Almost surely, 2^255784280761 is an apocalyptic number.

It is an amenable number.

255784280761 is a deficient number, since it is larger than the sum of its proper divisors (12303288647).

255784280761 is a wasteful number, since it uses less digits than its factorization.

255784280761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183912.

The product of its (nonzero) digits is 7526400, while the sum is 55.

The spelling of 255784280761 in words is "two hundred fifty-five billion, seven hundred eighty-four million, two hundred eighty thousand, seven hundred sixty-one".