20166866103 has 8 divisors (see below), whose sum is σ = 27544988016. Its totient is φ = 13116660800.

The previous prime is 20166866101. The next prime is 20166866119. The reversal of 20166866103 is 30166866102.

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

It is a cyclic number.

It is not a de Polignac number, because 20166866103 - 2¹ = 20166866101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20166866101) 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, 81979008 + ... + 81979253.

It is an arithmetic number, because the mean of its divisors is an integer number (3443123502).

Almost surely, 2^20166866103 is an apocalyptic number.

20166866103 is a deficient number, since it is larger than the sum of its proper divisors (7378121913).

20166866103 is a wasteful number, since it uses less digits than its factorization.

20166866103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163958305.

The product of its (nonzero) digits is 62208, while the sum is 39.

Subtracting 20166866103 from its reverse (30166866102), we obtain a palindrome (9999999999).

The spelling of 20166866103 in words is "twenty billion, one hundred sixty-six million, eight hundred sixty-six thousand, one hundred three".