20773268844 has 12 divisors (see below), whose sum is σ = 48470960664. Its totient is φ = 6924422944.

The previous prime is 20773268843. The next prime is 20773268861. The reversal of 20773268844 is 44886237702.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20773268843) 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, 865552857 + ... + 865552880.

It is an arithmetic number, because the mean of its divisors is an integer number (4039246722).

Almost surely, 2^20773268844 is an apocalyptic number.

It is an amenable number.

20773268844 is an abundant number, since it is smaller than the sum of its proper divisors (27697691820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20773268844 is a wasteful number, since it uses less digits than its factorization.

20773268844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731105744 (or 1731105742 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 51.

The spelling of 20773268844 in words is "twenty billion, seven hundred seventy-three million, two hundred sixty-eight thousand, eight hundred forty-four".