20466663742206 has 96 divisors (see below), whose sum is σ = 49978920416256. Its totient is φ = 5996826576000.

The previous prime is 20466663742193. The next prime is 20466663742253. The reversal of 20466663742206 is 60224736666402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5763850 + ... + 8611346.

It is an arithmetic number, because the mean of its divisors is an integer number (520613754336).

Almost surely, 2^{20466663742206} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20466663742206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24989460208128).

20466663742206 is an abundant number, since it is smaller than the sum of its proper divisors (29512256674050).

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

20466663742206 is a wasteful number, since it uses less digits than its factorization.

20466663742206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848718 (or 2848715 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 54.

The spelling of 20466663742206 in words is "twenty trillion, four hundred sixty-six billion, six hundred sixty-three million, seven hundred forty-two thousand, two hundred six".