20743066164 has 12 divisors (see below), whose sum is σ = 48400487744. Its totient is φ = 6914355384.

The previous prime is 20743066153. The next prime is 20743066243. The reversal of 20743066164 is 46166034702.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864294412 + ... + 864294435.

Almost surely, 2^20743066164 is an apocalyptic number.

It is an amenable number.

20743066164 is an abundant number, since it is smaller than the sum of its proper divisors (27657421580).

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

20743066164 is a wasteful number, since it uses less digits than its factorization.

20743066164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728588854 (or 1728588852 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 20743066164 in words is "twenty billion, seven hundred forty-three million, sixty-six thousand, one hundred sixty-four".