6435279320671 has 2 divisors, whose sum is σ = 6435279320672. Its totient is φ = 6435279320670.

The previous prime is 6435279320629. The next prime is 6435279320677. The reversal of 6435279320671 is 1760239725346.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6435279320671 - 2³³ = 6426689386079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6435279320677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3217639660335 + 3217639660336.

It is an arithmetic number, because the mean of its divisors is an integer number (3217639660336).

Almost surely, 2^{6435279320671} is an apocalyptic number.

6435279320671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6435279320671 is an equidigital number, since it uses as much as digits as its factorization.

6435279320671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 6435279320671 in words is "six trillion, four hundred thirty-five billion, two hundred seventy-nine million, three hundred twenty thousand, six hundred seventy-one".