20378598263 has 2 divisors, whose sum is σ = 20378598264. Its totient is φ = 20378598262.

The previous prime is 20378598239. The next prime is 20378598269. The reversal of 20378598263 is 36289587302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20378598263 - 2¹⁸ = 20378336119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20378598269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10189299131 + 10189299132.

It is an arithmetic number, because the mean of its divisors is an integer number (10189299132).

Almost surely, 2^20378598263 is an apocalyptic number.

20378598263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20378598263 is an equidigital number, since it uses as much as digits as its factorization.

20378598263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 20378598263 in words is "twenty billion, three hundred seventy-eight million, five hundred ninety-eight thousand, two hundred sixty-three".