20344535566311 has 32 divisors (see below), whose sum is σ = 30692746377216. Its totient is φ = 11877997680000.

The previous prime is 20344535566261. The next prime is 20344535566321. The reversal of 20344535566311 is 11366553544302.

It is not a de Polignac number, because 20344535566311 - 2¹⁸ = 20344535304167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344535566321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82362775 + ... + 82609416.

It is an arithmetic number, because the mean of its divisors is an integer number (959148324288).

Almost surely, 2^{20344535566311} is an apocalyptic number.

20344535566311 is a deficient number, since it is larger than the sum of its proper divisors (10348210810905).

20344535566311 is a wasteful number, since it uses less digits than its factorization.

20344535566311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164972343.

The product of its (nonzero) digits is 3888000, while the sum is 48.

The spelling of 20344535566311 in words is "twenty trillion, three hundred forty-four billion, five hundred thirty-five million, five hundred sixty-six thousand, three hundred eleven".