6750978989 has 2 divisors, whose sum is σ = 6750978990. Its totient is φ = 6750978988.

The previous prime is 6750978931. The next prime is 6750979009. The reversal of 6750978989 is 9898790576.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3755606089 + 2995372900 = 61283^2 + 54730^2 .

It is a cyclic number.

It is not a de Polignac number, because 6750978989 - 2²⁰ = 6749930413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6750978389) 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 as a sum of consecutive naturals, namely, 3375489494 + 3375489495.

It is an arithmetic number, because the mean of its divisors is an integer number (3375489495).

Almost surely, 2^6750978989 is an apocalyptic number.

It is an amenable number.

6750978989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6750978989 is an equidigital number, since it uses as much as digits as its factorization.

6750978989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68584320, while the sum is 68.

The square root of 6750978989 is about 82164.3413470832. The cubic root of 6750978989 is about 1889.9729370069.

The spelling of 6750978989 in words is "six billion, seven hundred fifty million, nine hundred seventy-eight thousand, nine hundred eighty-nine".