6916558861 has 2 divisors, whose sum is σ = 6916558862. Its totient is φ = 6916558860.

The previous prime is 6916558843. The next prime is 6916558867. The reversal of 6916558861 is 1688556196.

6916558861 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 can be written as a sum of positive squares in only one way, i.e., 6267888900 + 648669961 = 79170^2 + 25469^2 .

It is a cyclic number.

It is not a de Polignac number, because 6916558861 - 2¹⁵ = 6916526093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6916558867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3458279430 + 3458279431.

It is an arithmetic number, because the mean of its divisors is an integer number (3458279431).

Almost surely, 2^6916558861 is an apocalyptic number.

It is an amenable number.

6916558861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6916558861 is an equidigital number, since it uses as much as digits as its factorization.

6916558861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 55.

The square root of 6916558861 is about 83165.8515317435. The cubic root of 6916558861 is about 1905.2999631902.

The spelling of 6916558861 in words is "six billion, nine hundred sixteen million, five hundred fifty-eight thousand, eight hundred sixty-one".