254441522666 has 4 divisors (see below), whose sum is σ = 381662284002. Its totient is φ = 127220761332.

The previous prime is 254441522663. The next prime is 254441522717. The reversal of 254441522666 is 666225144452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 232531306225 + 21910216441 = 482215^2 + 148021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 254441522666.

It is not an unprimeable number, because it can be changed into a prime (254441522663) 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 as a sum of consecutive naturals, namely, 63610380665 + ... + 63610380668.

Almost surely, 2^254441522666 is an apocalyptic number.

254441522666 is a deficient number, since it is larger than the sum of its proper divisors (127220761336).

254441522666 is a wasteful number, since it uses less digits than its factorization.

254441522666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127220761335.

The product of its digits is 2764800, while the sum is 47.

The spelling of 254441522666 in words is "two hundred fifty-four billion, four hundred forty-one million, five hundred twenty-two thousand, six hundred sixty-six".