6451495997 has 2 divisors, whose sum is σ = 6451495998. Its totient is φ = 6451495996.

The previous prime is 6451495979. The next prime is 6451496017. The reversal of 6451495997 is 7995941546.

Together with previous prime (6451495979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5973898681 + 477597316 = 77291^2 + 21854^2 .

It is a cyclic number.

It is not a de Polignac number, because 6451495997 - 2⁸ = 6451495741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6451495957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225747998 + 3225747999.

It is an arithmetic number, because the mean of its divisors is an integer number (3225747999).

Almost surely, 2^6451495997 is an apocalyptic number.

It is an amenable number.

6451495997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451495997 is an equidigital number, since it uses as much as digits as its factorization.

6451495997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12247200, while the sum is 59.

The square root of 6451495997 is about 80321.2051515663. The cubic root of 6451495997 is about 1861.6018879214.

The spelling of 6451495997 in words is "six billion, four hundred fifty-one million, four hundred ninety-five thousand, nine hundred ninety-seven".