6401967127 has 2 divisors, whose sum is σ = 6401967128. Its totient is φ = 6401967126.

The previous prime is 6401967109. The next prime is 6401967133. The reversal of 6401967127 is 7217691046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6401967127 - 2⁷ = 6401966999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6401967197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200983563 + 3200983564.

It is an arithmetic number, because the mean of its divisors is an integer number (3200983564).

Almost surely, 2^6401967127 is an apocalyptic number.

6401967127 is a deficient number, since it is larger than the sum of its proper divisors (1).

6401967127 is an equidigital number, since it uses as much as digits as its factorization.

6401967127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 6401967127 is about 80012.2935991714. The cubic root of 6401967127 is about 1856.8257346827.

The spelling of 6401967127 in words is "six billion, four hundred one million, nine hundred sixty-seven thousand, one hundred twenty-seven".