6402127661407 has 2 divisors, whose sum is σ = 6402127661408. Its totient is φ = 6402127661406.

The previous prime is 6402127661393. The next prime is 6402127661441. The reversal of 6402127661407 is 7041667212046.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6402127661407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6402127661207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201063830703 + 3201063830704.

It is an arithmetic number, because the mean of its divisors is an integer number (3201063830704).

Almost surely, 2^{6402127661407} is an apocalyptic number.

6402127661407 is a deficient number, since it is larger than the sum of its proper divisors (1).

6402127661407 is an equidigital number, since it uses as much as digits as its factorization.

6402127661407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 6402127661407 in words is "six trillion, four hundred two billion, one hundred twenty-seven million, six hundred sixty-one thousand, four hundred seven".