20045064668 has 12 divisors (see below), whose sum is σ = 35098616112. Its totient is φ = 10016888640.

The previous prime is 20045064643. The next prime is 20045064707. The reversal of 20045064668 is 86646054002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1402928 + ... + 1417143.

It is an arithmetic number, because the mean of its divisors is an integer number (2924884676).

Almost surely, 2^20045064668 is an apocalyptic number.

It is an amenable number.

20045064668 is a deficient number, since it is larger than the sum of its proper divisors (15053551444).

20045064668 is a wasteful number, since it uses less digits than its factorization.

20045064668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821852 (or 2821850 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 20045064668 in words is "twenty billion, forty-five million, sixty-four thousand, six hundred sixty-eight".