20045634205 has 8 divisors (see below), whose sum is σ = 24325039800. Its totient is φ = 15856321536.

The previous prime is 20045634181. The next prime is 20045634211. The reversal of 20045634205 is 50243654002.

It can be written as a sum of positive squares in 4 ways, for example, as 924828921 + 19120805284 = 30411^2 + 138278^2 .

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 20045634205 - 2²³ = 20037245597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22522740 + ... + 22523629.

It is an arithmetic number, because the mean of its divisors is an integer number (3040629975).

Almost surely, 2^20045634205 is an apocalyptic number.

It is an amenable number.

20045634205 is a deficient number, since it is larger than the sum of its proper divisors (4279405595).

20045634205 is an equidigital number, since it uses as much as digits as its factorization.

20045634205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45046463.

The product of its (nonzero) digits is 28800, while the sum is 31.

The spelling of 20045634205 in words is "twenty billion, forty-five million, six hundred thirty-four thousand, two hundred five".