6945115511 has 2 divisors, whose sum is σ = 6945115512. Its totient is φ = 6945115510.

The previous prime is 6945115469. The next prime is 6945115531. The reversal of 6945115511 is 1155115496.

6945115511 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6945115511 is a prime.

It is a super-2 number, since 2×6945115511² = 96469258922265582242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6945115531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472557755 + 3472557756.

It is an arithmetic number, because the mean of its divisors is an integer number (3472557756).

Almost surely, 2^6945115511 is an apocalyptic number.

6945115511 is a deficient number, since it is larger than the sum of its proper divisors (1).

6945115511 is an equidigital number, since it uses as much as digits as its factorization.

6945115511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 38.

The square root of 6945115511 is about 83337.3596354000. The cubic root of 6945115511 is about 1907.9185232983.

The spelling of 6945115511 in words is "six billion, nine hundred forty-five million, one hundred fifteen thousand, five hundred eleven".