20103636386783 has 4 divisors (see below), whose sum is σ = 20379028666128. Its totient is φ = 19828244107440.

The previous prime is 20103636386741. The next prime is 20103636386833. The reversal of 20103636386783 is 38768363630102.

It is a happy number.

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 20103636386783 - 2²⁸ = 20103367951327 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 (20103633386783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137696139563 + ... + 137696139708.

It is an arithmetic number, because the mean of its divisors is an integer number (5094757166532).

Almost surely, 2^{20103636386783} is an apocalyptic number.

20103636386783 is a deficient number, since it is larger than the sum of its proper divisors (275392279345).

20103636386783 is an equidigital number, since it uses as much as digits as its factorization.

20103636386783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275392279344.

The product of its (nonzero) digits is 15676416, while the sum is 56.

The spelling of 20103636386783 in words is "twenty trillion, one hundred three billion, six hundred thirty-six million, three hundred eighty-six thousand, seven hundred eighty-three".