7939664911 has 2 divisors, whose sum is σ = 7939664912. Its totient is φ = 7939664910.

The previous prime is 7939664903. The next prime is 7939664917. The reversal of 7939664911 is 1194669397.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7939664911 - 2³ = 7939664903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7939664917) 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, 3969832455 + 3969832456.

It is an arithmetic number, because the mean of its divisors is an integer number (3969832456).

Almost surely, 2^7939664911 is an apocalyptic number.

7939664911 is a deficient number, since it is larger than the sum of its proper divisors (1).

7939664911 is an equidigital number, since it uses as much as digits as its factorization.

7939664911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 55.

The square root of 7939664911 is about 89104.7973512089. The cubic root of 7939664911 is about 1994.9593826778.

The spelling of 7939664911 in words is "seven billion, nine hundred thirty-nine million, six hundred sixty-four thousand, nine hundred eleven".