6151121591 has 2 divisors, whose sum is σ = 6151121592. Its totient is φ = 6151121590.

The previous prime is 6151121549. The next prime is 6151121609. The reversal of 6151121591 is 1951211516.

It is a happy number.

6151121591 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 not a de Polignac number, because 6151121591 - 2⁶ = 6151121527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6151121791) 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, 3075560795 + 3075560796.

It is an arithmetic number, because the mean of its divisors is an integer number (3075560796).

Almost surely, 2^6151121591 is an apocalyptic number.

6151121591 is a deficient number, since it is larger than the sum of its proper divisors (1).

6151121591 is an equidigital number, since it uses as much as digits as its factorization.

6151121591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 32.

The square root of 6151121591 is about 78429.0863838155. The cubic root of 6151121591 is about 1832.2501699347.

The spelling of 6151121591 in words is "six billion, one hundred fifty-one million, one hundred twenty-one thousand, five hundred ninety-one".