3940803315811 has 2 divisors, whose sum is σ = 3940803315812. Its totient is φ = 3940803315810.

The previous prime is 3940803315803. The next prime is 3940803315847. The reversal of 3940803315811 is 1185133080493.

It is a happy number.

3940803315811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3940803315811 - 2³ = 3940803315803 is a prime.

It is not a weakly prime, because it can be changed into another prime (3940803315871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970401657905 + 1970401657906.

It is an arithmetic number, because the mean of its divisors is an integer number (1970401657906).

Almost surely, 2^{3940803315811} is an apocalyptic number.

3940803315811 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940803315811 is an equidigital number, since it uses as much as digits as its factorization.

3940803315811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 3940803315811 in words is "three trillion, nine hundred forty billion, eight hundred three million, three hundred fifteen thousand, eight hundred eleven".