20434222410989 has 2 divisors, whose sum is σ = 20434222410990. Its totient is φ = 20434222410988.

The previous prime is 20434222410947. The next prime is 20434222411033. The reversal of 20434222410989 is 98901422243402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11975821572100 + 8458400838889 = 3460610^2 + 2908333^2 .

It is a cyclic number.

It is not a de Polignac number, because 20434222410989 - 2³² = 20429927443693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20434222410289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217111205494 + 10217111205495.

It is an arithmetic number, because the mean of its divisors is an integer number (10217111205495).

Almost surely, 2^{20434222410989} is an apocalyptic number.

It is an amenable number.

20434222410989 is a deficient number, since it is larger than the sum of its proper divisors (1).

20434222410989 is an equidigital number, since it uses as much as digits as its factorization.

20434222410989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 20434222410989 in words is "twenty trillion, four hundred thirty-four billion, two hundred twenty-two million, four hundred ten thousand, nine hundred eighty-nine".