20402301043 has 2 divisors, whose sum is σ = 20402301044. Its totient is φ = 20402301042.

The previous prime is 20402301019. The next prime is 20402301047. The reversal of 20402301043 is 34010320402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20402301043 - 2⁹ = 20402300531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20402301043.

It is not a weakly prime, because it can be changed into another prime (20402301047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201150521 + 10201150522.

It is an arithmetic number, because the mean of its divisors is an integer number (10201150522).

Almost surely, 2^20402301043 is an apocalyptic number.

20402301043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402301043 is an equidigital number, since it uses as much as digits as its factorization.

20402301043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20402301043 its reverse (34010320402), we get a palindrome (54412621445).

The spelling of 20402301043 in words is "twenty billion, four hundred two million, three hundred one thousand, forty-three".