255456335161666 has 8 divisors (see below), whose sum is σ = 399844698513984. Its totient is φ = 122174768990340.

The previous prime is 255456335161663. The next prime is 255456335161693. The reversal of 255456335161666 is 666161533654552.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 255456335161598 and 255456335161607.

It is not an unprimeable number, because it can be changed into a prime (255456335161661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2776699295190 + ... + 2776699295281.

It is an arithmetic number, because the mean of its divisors is an integer number (49980587314248).

Almost surely, 2^{255456335161666} is an apocalyptic number.

255456335161666 is a deficient number, since it is larger than the sum of its proper divisors (144388363352318).

255456335161666 is a wasteful number, since it uses less digits than its factorization.

255456335161666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553398590496.

The product of its digits is 349920000, while the sum is 64.

The spelling of 255456335161666 in words is "two hundred fifty-five trillion, four hundred fifty-six billion, three hundred thirty-five million, one hundred sixty-one thousand, six hundred sixty-six".