20434665869323 has 2 divisors, whose sum is σ = 20434665869324. Its totient is φ = 20434665869322.

The previous prime is 20434665869273. The next prime is 20434665869369. The reversal of 20434665869323 is 32396856643402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20434665869323 is a prime.

It is not a weakly prime, because it can be changed into another prime (20434665869383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217332934661 + 10217332934662.

It is an arithmetic number, because the mean of its divisors is an integer number (10217332934662).

Almost surely, 2^{20434665869323} is an apocalyptic number.

20434665869323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20434665869323 is an equidigital number, since it uses as much as digits as its factorization.

20434665869323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134369280, while the sum is 61.

The spelling of 20434665869323 in words is "twenty trillion, four hundred thirty-four billion, six hundred sixty-five million, eight hundred sixty-nine thousand, three hundred twenty-three".