20392580447 has 2 divisors, whose sum is σ = 20392580448. Its totient is φ = 20392580446.

The previous prime is 20392580423. The next prime is 20392580449. The reversal of 20392580447 is 74408529302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20392580447 - 2¹⁰ = 20392579423 is a prime.

Together with 20392580449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20392580398 and 20392580407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20392580449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10196290223 + 10196290224.

It is an arithmetic number, because the mean of its divisors is an integer number (10196290224).

Almost surely, 2^20392580447 is an apocalyptic number.

20392580447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20392580447 is an equidigital number, since it uses as much as digits as its factorization.

20392580447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 20392580447 in words is "twenty billion, three hundred ninety-two million, five hundred eighty thousand, four hundred forty-seven".