19682160666 has 32 divisors (see below), whose sum is σ = 45836627328. Its totient is φ = 5517370560.

The previous prime is 19682160653. The next prime is 19682160671. The reversal of 19682160666 is 66606128691.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4418745 + ... + 4423196.

It is an arithmetic number, because the mean of its divisors is an integer number (1432394604).

Almost surely, 2^19682160666 is an apocalyptic number.

19682160666 is an abundant number, since it is smaller than the sum of its proper divisors (26154466662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19682160666 is a wasteful number, since it uses less digits than its factorization.

19682160666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842006.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 19682160666 in words is "nineteen billion, six hundred eighty-two million, one hundred sixty thousand, six hundred sixty-six".