6109421081 has 2 divisors, whose sum is σ = 6109421082. Its totient is φ = 6109421080.

The previous prime is 6109421057. The next prime is 6109421099. The reversal of 6109421081 is 1801249016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5175507481 + 933913600 = 71941^2 + 30560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6109421081 is a prime.

It is a super-2 number, since 2×6109421081² = 74650051889934417122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6109421011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3054710540 + 3054710541.

It is an arithmetic number, because the mean of its divisors is an integer number (3054710541).

Almost surely, 2^6109421081 is an apocalyptic number.

It is an amenable number.

6109421081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6109421081 is an equidigital number, since it uses as much as digits as its factorization.

6109421081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 6109421081 is about 78162.7857807026. The cubic root of 6109421081 is about 1828.1002991227.

The spelling of 6109421081 in words is "six billion, one hundred nine million, four hundred twenty-one thousand, eighty-one".