20127664384 has 27 divisors (see below), whose sum is σ = 40181236627. Its totient is φ = 10062697216.

The previous prime is 20127664273. The next prime is 20127664393. The reversal of 20127664384 is 48346672102.

The square root of 20127664384 is 141872.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20127664384.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2265519 + ... + 2274385.

Almost surely, 2^20127664384 is an apocalyptic number.

20127664384 is the 141872-nd square number.

It is an amenable number.

20127664384 is a deficient number, since it is larger than the sum of its proper divisors (20053572243).

20127664384 is an frugal number, since it uses more digits than its factorization.

20127664384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17750 (or 8869 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 20127664384 in words is "twenty billion, one hundred twenty-seven million, six hundred sixty-four thousand, three hundred eighty-four".