20706568411 has 4 divisors (see below), whose sum is σ = 20792488024. Its totient is φ = 20620648800.

The previous prime is 20706568403. The next prime is 20706568457. The reversal of 20706568411 is 11486560702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11486560702 = 2 ⋅5743280351.

It is a cyclic number.

It is not a de Polignac number, because 20706568411 - 2³ = 20706568403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20706568111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42959445 + ... + 42959926.

It is an arithmetic number, because the mean of its divisors is an integer number (5198122006).

Almost surely, 2^20706568411 is an apocalyptic number.

20706568411 is a deficient number, since it is larger than the sum of its proper divisors (85919613).

20706568411 is an equidigital number, since it uses as much as digits as its factorization.

20706568411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85919612.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 20706568411 in words is "twenty billion, seven hundred six million, five hundred sixty-eight thousand, four hundred eleven".