20434665869318 has 16 divisors (see below), whose sum is σ = 31748761973376. Its totient is φ = 9853994982720.

The previous prime is 20434665869273. The next prime is 20434665869323. The reversal of 20434665869318 is 81396856643402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 562424471 + ... + 562460802.

It is an arithmetic number, because the mean of its divisors is an integer number (1984297623336).

Almost surely, 2^{20434665869318} is an apocalyptic number.

20434665869318 is a deficient number, since it is larger than the sum of its proper divisors (11314096104058).

20434665869318 is a wasteful number, since it uses less digits than its factorization.

20434665869318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124885599.

The product of its (nonzero) digits is 179159040, while the sum is 65.

The spelling of 20434665869318 in words is "twenty trillion, four hundred thirty-four billion, six hundred sixty-five million, eight hundred sixty-nine thousand, three hundred eighteen".