20599078847 has 2 divisors, whose sum is σ = 20599078848. Its totient is φ = 20599078846.

The previous prime is 20599078751. The next prime is 20599078867. The reversal of 20599078847 is 74887099502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20599078847 - 2¹⁸ = 20598816703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20599078867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10299539423 + 10299539424.

It is an arithmetic number, because the mean of its divisors is an integer number (10299539424).

Almost surely, 2^20599078847 is an apocalyptic number.

20599078847 is a deficient number, since it is larger than the sum of its proper divisors (1).

20599078847 is an equidigital number, since it uses as much as digits as its factorization.

20599078847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 20599078847 in words is "twenty billion, five hundred ninety-nine million, seventy-eight thousand, eight hundred forty-seven".