666019432466 has 8 divisors (see below), whose sum is σ = 999105665664. Its totient is φ = 332984210580.

The previous prime is 666019432453. The next prime is 666019432471. The reversal of 666019432466 is 664234910666.

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, 12720170 + ... + 12772421.

It is an arithmetic number, because the mean of its divisors is an integer number (124888208208).

Almost surely, 2^666019432466 is an apocalyptic number.

666019432466 is a deficient number, since it is larger than the sum of its proper divisors (333086233198).

666019432466 is a wasteful number, since it uses less digits than its factorization.

666019432466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25505656.

The product of its (nonzero) digits is 6718464, while the sum is 53.

The spelling of 666019432466 in words is "six hundred sixty-six billion, nineteen million, four hundred thirty-two thousand, four hundred sixty-six".