20319764944 has 40 divisors (see below), whose sum is σ = 39484000640. Its totient is φ = 10130400000.

The previous prime is 20319764911. The next prime is 20319764957. The reversal of 20319764944 is 44946791302.

It is a super-2 number, since 2×20319764944² (a number of 21 digits) contains 22 as substring.

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, 12628012 + ... + 12629620.

It is an arithmetic number, because the mean of its divisors is an integer number (987100016).

Almost surely, 2^20319764944 is an apocalyptic number.

It is an amenable number.

20319764944 is a deficient number, since it is larger than the sum of its proper divisors (19164235696).

20319764944 is a wasteful number, since it uses less digits than its factorization.

20319764944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419 (or 3413 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 20319764944 in words is "twenty billion, three hundred nineteen million, seven hundred sixty-four thousand, nine hundred forty-four".