6415308469891 has 2 divisors, whose sum is σ = 6415308469892. Its totient is φ = 6415308469890.

The previous prime is 6415308469859. The next prime is 6415308469993. The reversal of 6415308469891 is 1989648035146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6415308469891 - 2⁵ = 6415308469859 is a prime.

It is not a weakly prime, because it can be changed into another prime (6415308469391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3207654234945 + 3207654234946.

It is an arithmetic number, because the mean of its divisors is an integer number (3207654234946).

Almost surely, 2^{6415308469891} is an apocalyptic number.

6415308469891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6415308469891 is an equidigital number, since it uses as much as digits as its factorization.

6415308469891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44789760, while the sum is 64.

The spelling of 6415308469891 in words is "six trillion, four hundred fifteen billion, three hundred eight million, four hundred sixty-nine thousand, eight hundred ninety-one".