20963304413 has 4 divisors (see below), whose sum is σ = 20964337020. Its totient is φ = 20962271808.

The previous prime is 20963304389. The next prime is 20963304433. The reversal of 20963304413 is 31440336902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2864176324 + 18099128089 = 53518^2 + 134533^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20963304413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20963304433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485228 + ... + 526661.

It is an arithmetic number, because the mean of its divisors is an integer number (5241084255).

Almost surely, 2^20963304413 is an apocalyptic number.

It is an amenable number.

20963304413 is a deficient number, since it is larger than the sum of its proper divisors (1032607).

20963304413 is a wasteful number, since it uses less digits than its factorization.

20963304413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032606.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 20963304413 in words is "twenty billion, nine hundred sixty-three million, three hundred four thousand, four hundred thirteen".