20402402304443 has 2 divisors, whose sum is σ = 20402402304444. Its totient is φ = 20402402304442.

The previous prime is 20402402304409. The next prime is 20402402304469. The reversal of 20402402304443 is 34440320420402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20402402304443 - 2²⁶ = 20402335195579 is a prime.

It is not a weakly prime, because it can be changed into another prime (20402402306443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201201152221 + 10201201152222.

It is an arithmetic number, because the mean of its divisors is an integer number (10201201152222).

Almost surely, 2^{20402402304443} is an apocalyptic number.

20402402304443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402402304443 is an equidigital number, since it uses as much as digits as its factorization.

20402402304443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 20402402304443 its reverse (34440320420402), we get a palindrome (54842722724845).

The spelling of 20402402304443 in words is "twenty trillion, four hundred two billion, four hundred two million, three hundred four thousand, four hundred forty-three".