20043340019 has 2 divisors, whose sum is σ = 20043340020. Its totient is φ = 20043340018.

The previous prime is 20043340013. The next prime is 20043340033. The reversal of 20043340019 is 91004334002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20043340019 - 2²⁸ = 19774904563 is a prime.

It is a super-2 number, since 2×20043340019² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20043340019.

It is not a weakly prime, because it can be changed into another prime (20043340013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021670009 + 10021670010.

It is an arithmetic number, because the mean of its divisors is an integer number (10021670010).

Almost surely, 2^20043340019 is an apocalyptic number.

20043340019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043340019 is an equidigital number, since it uses as much as digits as its factorization.

20043340019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 20043340019 in words is "twenty billion, forty-three million, three hundred forty thousand, nineteen".