20868271727 has 4 divisors (see below), whose sum is σ = 20869153536. Its totient is φ = 20867389920.

The previous prime is 20868271693. The next prime is 20868271751. The reversal of 20868271727 is 72717286802.

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 20868271727 - 2¹² = 20868267631 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 (20868271777) 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, 404399 + ... + 453072.

It is an arithmetic number, because the mean of its divisors is an integer number (5217288384).

Almost surely, 2^20868271727 is an apocalyptic number.

20868271727 is a deficient number, since it is larger than the sum of its proper divisors (881809).

20868271727 is an equidigital number, since it uses as much as digits as its factorization.

20868271727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881808.

The product of its (nonzero) digits is 1053696, while the sum is 50.

The spelling of 20868271727 in words is "twenty billion, eight hundred sixty-eight million, two hundred seventy-one thousand, seven hundred twenty-seven".