20907313266783 has 16 divisors (see below), whose sum is σ = 27901182123360. Its totient is φ = 13925831356416.

The previous prime is 20907313266767. The next prime is 20907313266809. The reversal of 20907313266783 is 38766231370902.

It is not a de Polignac number, because 20907313266783 - 2⁴ = 20907313266767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20907313266683) 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 15 ways as a sum of consecutive naturals, for example, 17174583 + ... + 18351591.

It is an arithmetic number, because the mean of its divisors is an integer number (1743823882710).

Almost surely, 2^{20907313266783} is an apocalyptic number.

20907313266783 is a deficient number, since it is larger than the sum of its proper divisors (6993868856577).

20907313266783 is a wasteful number, since it uses less digits than its factorization.

20907313266783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182266.

The product of its (nonzero) digits is 13716864, while the sum is 57.

The spelling of 20907313266783 in words is "twenty trillion, nine hundred seven billion, three hundred thirteen million, two hundred sixty-six thousand, seven hundred eighty-three".