6466277217679 has 4 divisors (see below), whose sum is σ = 6482900038680. Its totient is φ = 6449654396680.

The previous prime is 6466277217643. The next prime is 6466277217761. The reversal of 6466277217679 is 9767127726646.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6466277217679 - 2¹⁹ = 6466276693391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466277217619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8311409917 + ... + 8311410694.

It is an arithmetic number, because the mean of its divisors is an integer number (1620725009670).

Almost surely, 2^{6466277217679} is an apocalyptic number.

6466277217679 is a deficient number, since it is larger than the sum of its proper divisors (16622821001).

6466277217679 is a wasteful number, since it uses less digits than its factorization.

6466277217679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16622821000.

The product of its digits is 448084224, while the sum is 70.

The spelling of 6466277217679 in words is "six trillion, four hundred sixty-six billion, two hundred seventy-seven million, two hundred seventeen thousand, six hundred seventy-nine".