20323034993 has 2 divisors, whose sum is σ = 20323034994. Its totient is φ = 20323034992.

The previous prime is 20323034983. The next prime is 20323035013. The reversal of 20323034993 is 39943032302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20045745889 + 277289104 = 141583^2 + 16652^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323034993 - 2⁶ = 20323034929 is a prime.

It is not a weakly prime, because it can be changed into another prime (20323034983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161517496 + 10161517497.

It is an arithmetic number, because the mean of its divisors is an integer number (10161517497).

Almost surely, 2^20323034993 is an apocalyptic number.

It is an amenable number.

20323034993 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323034993 is an equidigital number, since it uses as much as digits as its factorization.

20323034993 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 38.

The spelling of 20323034993 in words is "twenty billion, three hundred twenty-three million, thirty-four thousand, nine hundred ninety-three".