20623381763 has 2 divisors, whose sum is σ = 20623381764. Its totient is φ = 20623381762.

The previous prime is 20623381759. The next prime is 20623381771. The reversal of 20623381763 is 36718332602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20623381763 - 2² = 20623381759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20623381763.

It is not a weakly prime, because it can be changed into another prime (20623381063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10311690881 + 10311690882.

It is an arithmetic number, because the mean of its divisors is an integer number (10311690882).

Almost surely, 2^20623381763 is an apocalyptic number.

20623381763 is a deficient number, since it is larger than the sum of its proper divisors (1).

20623381763 is an equidigital number, since it uses as much as digits as its factorization.

20623381763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 20623381763 in words is "twenty billion, six hundred twenty-three million, three hundred eighty-one thousand, seven hundred sixty-three".