255666065651061 has 32 divisors (see below), whose sum is σ = 368564089541760. Its totient is φ = 156709972967424.

The previous prime is 255666065650967. The next prime is 255666065651071. The reversal of 255666065651061 is 160156560666552.

It is not a de Polignac number, because 255666065651061 - 2¹⁷ = 255666065519989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255666065650986 and 255666065651004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255666065651071) 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 31 ways as a sum of consecutive naturals, for example, 145794970 + ... + 147538148.

It is an arithmetic number, because the mean of its divisors is an integer number (11517627798180).

Almost surely, 2^{255666065651061} is an apocalyptic number.

It is an amenable number.

255666065651061 is a deficient number, since it is larger than the sum of its proper divisors (112898023890699).

255666065651061 is a wasteful number, since it uses less digits than its factorization.

255666065651061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758085.

The product of its (nonzero) digits is 58320000, while the sum is 60.

The spelling of 255666065651061 in words is "two hundred fifty-five trillion, six hundred sixty-six billion, sixty-five million, six hundred fifty-one thousand, sixty-one".