402441244666 has 8 divisors (see below), whose sum is σ = 603826050420. Its totient is φ = 201165894528.

The previous prime is 402441244657. The next prime is 402441244691. The reversal of 402441244666 is 666442144204.

It can be written as a sum of positive squares in 2 ways, for example, as 330485864641 + 71955380025 = 574879^2 + 268245^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27354711 + ... + 27369418.

Almost surely, 2^402441244666 is an apocalyptic number.

402441244666 is a deficient number, since it is larger than the sum of its proper divisors (201384805754).

402441244666 is a wasteful number, since it uses less digits than its factorization.

402441244666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54727808.

The product of its (nonzero) digits is 884736, while the sum is 43.

The spelling of 402441244666 in words is "four hundred two billion, four hundred forty-one million, two hundred forty-four thousand, six hundred sixty-six".