20381568367 has 2 divisors, whose sum is σ = 20381568368. Its totient is φ = 20381568366.

The previous prime is 20381568359. The next prime is 20381568433. The reversal of 20381568367 is 76386518302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20381568367 - 2³ = 20381568359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20381568367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20381568307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10190784183 + 10190784184.

It is an arithmetic number, because the mean of its divisors is an integer number (10190784184).

Almost surely, 2^20381568367 is an apocalyptic number.

20381568367 is a deficient number, since it is larger than the sum of its proper divisors (1).

20381568367 is an equidigital number, since it uses as much as digits as its factorization.

20381568367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 20381568367 in words is "twenty billion, three hundred eighty-one million, five hundred sixty-eight thousand, three hundred sixty-seven".