20334065663 has 4 divisors (see below), whose sum is σ = 20406429168. Its totient is φ = 20261702160.

The previous prime is 20334065627. The next prime is 20334065681. The reversal of 20334065663 is 36656043302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20334065663 - 2⁶ = 20334065599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334065263) 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, 36181331 + ... + 36181892.

It is an arithmetic number, because the mean of its divisors is an integer number (5101607292).

Almost surely, 2^20334065663 is an apocalyptic number.

20334065663 is a deficient number, since it is larger than the sum of its proper divisors (72363505).

20334065663 is an equidigital number, since it uses as much as digits as its factorization.

20334065663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72363504.

The product of its (nonzero) digits is 233280, while the sum is 38.

The spelling of 20334065663 in words is "twenty billion, three hundred thirty-four million, sixty-five thousand, six hundred sixty-three".