244540135666 has 8 divisors (see below), whose sum is σ = 366913803564. Its totient is φ = 122235534480.

The previous prime is 244540135649. The next prime is 244540135681. The reversal of 244540135666 is 666531045442.

It can be written as a sum of positive squares in 2 ways, for example, as 227167577641 + 17372558025 = 476621^2 + 131805^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17257825 + ... + 17271988.

Almost surely, 2^244540135666 is an apocalyptic number.

244540135666 is a deficient number, since it is larger than the sum of its proper divisors (122373667898).

244540135666 is a wasteful number, since it uses less digits than its factorization.

244540135666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34533356.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 244540135666 in words is "two hundred forty-four billion, five hundred forty million, one hundred thirty-five thousand, six hundred sixty-six".