20028960927389 has 2 divisors, whose sum is σ = 20028960927390. Its totient is φ = 20028960927388.

The previous prime is 20028960927319. The next prime is 20028960927413. The reversal of 20028960927389 is 98372906982002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19567263780100 + 461697147289 = 4423490^2 + 679483^2 .

It is a cyclic number.

It is not a de Polignac number, because 20028960927389 - 2⁴⁰ = 18929449299613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20028960927319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10014480463694 + 10014480463695.

It is an arithmetic number, because the mean of its divisors is an integer number (10014480463695).

Almost surely, 2^{20028960927389} is an apocalyptic number.

It is an amenable number.

20028960927389 is a deficient number, since it is larger than the sum of its proper divisors (1).

20028960927389 is an equidigital number, since it uses as much as digits as its factorization.

20028960927389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 20028960927389 in words is "twenty trillion, twenty-eight billion, nine hundred sixty million, nine hundred twenty-seven thousand, three hundred eighty-nine".