6155680889 has 2 divisors, whose sum is σ = 6155680890. Its totient is φ = 6155680888.

The previous prime is 6155680847. The next prime is 6155680891. The reversal of 6155680889 is 9880865516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4453293289 + 1702387600 = 66733^2 + 41260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6155680889 is a prime.

Together with 6155680891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6155680829) 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, 3077840444 + 3077840445.

It is an arithmetic number, because the mean of its divisors is an integer number (3077840445).

Almost surely, 2^6155680889 is an apocalyptic number.

It is an amenable number.

6155680889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6155680889 is an equidigital number, since it uses as much as digits as its factorization.

6155680889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 56.

The square root of 6155680889 is about 78458.1473717039. The cubic root of 6155680889 is about 1832.7027546806.

The spelling of 6155680889 in words is "six billion, one hundred fifty-five million, six hundred eighty thousand, eight hundred eighty-nine".