423744545666 has 8 divisors (see below), whose sum is σ = 684510419964. Its totient is φ = 195574405680.

The previous prime is 423744545641. The next prime is 423744545681. The reversal of 423744545666 is 666545447324.

It can be written as a sum of positive squares in 2 ways, for example, as 417154515625 + 6590030041 = 645875^2 + 81179^2 .

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, 8148933545 + ... + 8148933596.

Almost surely, 2^423744545666 is an apocalyptic number.

423744545666 is a deficient number, since it is larger than the sum of its proper divisors (260765874298).

423744545666 is a wasteful number, since it uses less digits than its factorization.

423744545666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16297867156.

The product of its digits is 58060800, while the sum is 56.

The spelling of 423744545666 in words is "four hundred twenty-three billion, seven hundred forty-four million, five hundred forty-five thousand, six hundred sixty-six".