20863668425039 has 4 divisors (see below), whose sum is σ = 22760365554600. Its totient is φ = 18966971295480.

The previous prime is 20863668424999. The next prime is 20863668425053. The reversal of 20863668425039 is 93052486636802.

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 20863668425039 - 2⁸ = 20863668424783 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 (20863668425099) 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, 948348564764 + ... + 948348564785.

It is an arithmetic number, because the mean of its divisors is an integer number (5690091388650).

Almost surely, 2^{20863668425039} is an apocalyptic number.

20863668425039 is a deficient number, since it is larger than the sum of its proper divisors (1896697129561).

20863668425039 is a wasteful number, since it uses less digits than its factorization.

20863668425039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896697129560.

The product of its (nonzero) digits is 89579520, while the sum is 62.

The spelling of 20863668425039 in words is "twenty trillion, eight hundred sixty-three billion, six hundred sixty-eight million, four hundred twenty-five thousand, thirty-nine".