20366722664 has 16 divisors (see below), whose sum is σ = 38670993600. Its totient is φ = 10054457712.

The previous prime is 20366722601. The next prime is 20366722667. The reversal of 20366722664 is 46622766302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20366722667) by changing a digit.

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, 16112282 + ... + 16113545.

It is an arithmetic number, because the mean of its divisors is an integer number (2416937100).

Almost surely, 2^20366722664 is an apocalyptic number.

It is an amenable number.

20366722664 is a deficient number, since it is larger than the sum of its proper divisors (18304270936).

20366722664 is a wasteful number, since it uses less digits than its factorization.

20366722664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32225912 (or 32225908 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 44.

The spelling of 20366722664 in words is "twenty billion, three hundred sixty-six million, seven hundred twenty-two thousand, six hundred sixty-four".