20066615206 has 16 divisors (see below), whose sum is σ = 32848733520. Its totient is φ = 9117729280.

The previous prime is 20066615189. The next prime is 20066615209. The reversal of 20066615206 is 60251666002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066615209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113191 + ... + 230098.

It is an arithmetic number, because the mean of its divisors is an integer number (2053045845).

Almost surely, 2^20066615206 is an apocalyptic number.

20066615206 is a deficient number, since it is larger than the sum of its proper divisors (12782118314).

20066615206 is a wasteful number, since it uses less digits than its factorization.

20066615206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345959.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 20066615206 in words is "twenty billion, sixty-six million, six hundred fifteen thousand, two hundred six".