20928632468743 has 2 divisors, whose sum is σ = 20928632468744. Its totient is φ = 20928632468742.

The previous prime is 20928632468687. The next prime is 20928632468773. The reversal of 20928632468743 is 34786423682902.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20928632468743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20928632468773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10464316234371 + 10464316234372.

It is an arithmetic number, because the mean of its divisors is an integer number (10464316234372).

Almost surely, 2^{20928632468743} is an apocalyptic number.

20928632468743 is a deficient number, since it is larger than the sum of its proper divisors (1).

20928632468743 is an equidigital number, since it uses as much as digits as its factorization.

20928632468743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 167215104, while the sum is 64.

The spelling of 20928632468743 in words is "twenty trillion, nine hundred twenty-eight billion, six hundred thirty-two million, four hundred sixty-eight thousand, seven hundred forty-three".