20306323963 has 2 divisors, whose sum is σ = 20306323964. Its totient is φ = 20306323962.

The previous prime is 20306323937. The next prime is 20306323981. The reversal of 20306323963 is 36932360302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20306323963 is a prime.

It is not a weakly prime, because it can be changed into another prime (20306323903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10153161981 + 10153161982.

It is an arithmetic number, because the mean of its divisors is an integer number (10153161982).

Almost surely, 2^20306323963 is an apocalyptic number.

20306323963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20306323963 is an equidigital number, since it uses as much as digits as its factorization.

20306323963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 37.

The spelling of 20306323963 in words is "twenty billion, three hundred six million, three hundred twenty-three thousand, nine hundred sixty-three".