255654414666 has 72 divisors (see below), whose sum is σ = 649057090500. Its totient is φ = 72510915456.

The previous prime is 255654414661. The next prime is 255654414679. The reversal of 255654414666 is 666414456552.

It can be written as a sum of positive squares in 2 ways, for example, as 254037168441 + 1617246225 = 504021^2 + 40215^2 .

It is not an unprimeable number, because it can be changed into a prime (255654414661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 937041 + ... + 1178708.

Almost surely, 2^255654414666 is an apocalyptic number.

255654414666 is an abundant number, since it is smaller than the sum of its proper divisors (393402675834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255654414666 is a wasteful number, since it uses less digits than its factorization.

255654414666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115908 (or 2115898 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 54.

The spelling of 255654414666 in words is "two hundred fifty-five billion, six hundred fifty-four million, four hundred fourteen thousand, six hundred sixty-six".