6504411491 has 2 divisors, whose sum is σ = 6504411492. Its totient is φ = 6504411490.

The previous prime is 6504411443. The next prime is 6504411509. The reversal of 6504411491 is 1941144056.

It is a happy number.

6504411491 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 6504411491 - 2⁶ = 6504411427 is a prime.

It is not a weakly prime, because it can be changed into another prime (6504411401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252205745 + 3252205746.

It is an arithmetic number, because the mean of its divisors is an integer number (3252205746).

Almost surely, 2^6504411491 is an apocalyptic number.

6504411491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6504411491 is an equidigital number, since it uses as much as digits as its factorization.

6504411491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 6504411491 is about 80649.9317482662. The cubic root of 6504411491 is about 1866.6776865031.

The spelling of 6504411491 in words is "six billion, five hundred four million, four hundred eleven thousand, four hundred ninety-one".