20206166660706 has 32 divisors (see below), whose sum is σ = 43522254155520. Its totient is φ = 6217099219584.

The previous prime is 20206166660689. The next prime is 20206166660707. The reversal of 20206166660706 is 60706666160202.

It is a super-2 number, since 2×20206166660706² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20206166660707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127475 + ... + 6456278.

It is an arithmetic number, because the mean of its divisors is an integer number (1360070442360).

Almost surely, 2^{20206166660706} is an apocalyptic number.

20206166660706 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20206166660706 is an abundant number, since it is smaller than the sum of its proper divisors (23316087494814).

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

20206166660706 is a wasteful number, since it uses less digits than its factorization.

20206166660706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7617930.

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 20206166660706 in words is "twenty trillion, two hundred six billion, one hundred sixty-six million, six hundred sixty thousand, seven hundred six".