20666206046 has 8 divisors (see below), whose sum is σ = 31755389904. Its totient is φ = 10081076080.

The previous prime is 20666206019. The next prime is 20666206069. The reversal of 20666206046 is 64060266602.

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

It is a congruent number.

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, 126013370 + ... + 126013533.

It is an arithmetic number, because the mean of its divisors is an integer number (3969423738).

Almost surely, 2^20666206046 is an apocalyptic number.

20666206046 is a deficient number, since it is larger than the sum of its proper divisors (11089183858).

20666206046 is a wasteful number, since it uses less digits than its factorization.

20666206046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252026946.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 20666206046 in words is "twenty billion, six hundred sixty-six million, two hundred six thousand, forty-six".