3920996711809 has 4 divisors (see below), whose sum is σ = 3926345957716. Its totient is φ = 3915647465904.

The previous prime is 3920996711803. The next prime is 3920996711893. The reversal of 3920996711809 is 9081176990293.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3861040292209 + 59956419600 = 1964953^2 + 244860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3920996711809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3920996711803) 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, 2674621854 + ... + 2674623319.

It is an arithmetic number, because the mean of its divisors is an integer number (981586489429).

Almost surely, 2^{3920996711809} is an apocalyptic number.

It is an amenable number.

3920996711809 is a deficient number, since it is larger than the sum of its proper divisors (5349245907).

3920996711809 is an equidigital number, since it uses as much as digits as its factorization.

3920996711809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349245906.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The spelling of 3920996711809 in words is "three trillion, nine hundred twenty billion, nine hundred ninety-six million, seven hundred eleven thousand, eight hundred nine".