20306323937 has 2 divisors, whose sum is σ = 20306323938. Its totient is φ = 20306323936.

The previous prime is 20306323907. The next prime is 20306323963. The reversal of 20306323937 is 73932360302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20288014096 + 18309841 = 142436^2 + 4279^2 .

It is a cyclic number.

It is not a de Polignac number, because 20306323937 - 2¹⁰ = 20306322913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20306323937.

It is not a weakly prime, because it can be changed into another prime (20306323907) 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, 10153161968 + 10153161969.

It is an arithmetic number, because the mean of its divisors is an integer number (10153161969).

Almost surely, 2^20306323937 is an apocalyptic number.

It is an amenable number.

20306323937 is a deficient number, since it is larger than the sum of its proper divisors (1).

20306323937 is an equidigital number, since it uses as much as digits as its factorization.

20306323937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 38.

The spelling of 20306323937 in words is "twenty billion, three hundred six million, three hundred twenty-three thousand, nine hundred thirty-seven".