20166466201 has 4 divisors (see below), whose sum is σ = 23047389952. Its totient is φ = 17285542452.

The previous prime is 20166466169. The next prime is 20166466207. The reversal of 20166466201 is 10266466102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20166466201 - 2⁵ = 20166466169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20166466207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440461865 + ... + 1440461878.

It is an arithmetic number, because the mean of its divisors is an integer number (5761847488).

Almost surely, 2^20166466201 is an apocalyptic number.

It is an amenable number.

20166466201 is a deficient number, since it is larger than the sum of its proper divisors (2880923751).

20166466201 is an equidigital number, since it uses as much as digits as its factorization.

20166466201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880923750.

The product of its (nonzero) digits is 20736, while the sum is 34.

Subtracting from 20166466201 its reverse (10266466102), we obtain a palindrome (9900000099).

The spelling of 20166466201 in words is "twenty billion, one hundred sixty-six million, four hundred sixty-six thousand, two hundred one".