20844543883043 has 4 divisors (see below), whose sum is σ = 22070693523240. Its totient is φ = 19618394242848.

The previous prime is 20844543882949. The next prime is 20844543883061. The reversal of 20844543883043 is 34038834544802.

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

It is a cyclic number.

It is not a de Polignac number, because 20844543883043 - 2²⁴ = 20844527105827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20844543883043.

It is not an unprimeable number, because it can be changed into a prime (20844543886043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613074820073 + ... + 613074820106.

It is an arithmetic number, because the mean of its divisors is an integer number (5517673380810).

Almost surely, 2^{20844543883043} is an apocalyptic number.

20844543883043 is a deficient number, since it is larger than the sum of its proper divisors (1226149640197).

20844543883043 is a wasteful number, since it uses less digits than its factorization.

20844543883043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226149640196.

The product of its (nonzero) digits is 35389440, while the sum is 56.

The spelling of 20844543883043 in words is "twenty trillion, eight hundred forty-four billion, five hundred forty-three million, eight hundred eighty-three thousand, forty-three".