6439212864475 has 6 divisors (see below), whose sum is σ = 7984623951980. Its totient is φ = 5151370291560.

The previous prime is 6439212864449. The next prime is 6439212864481. The reversal of 6439212864475 is 5744682129346.

It is not a de Polignac number, because 6439212864475 - 2⁵ = 6439212864443 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128784257265 + ... + 128784257314.

Almost surely, 2^{6439212864475} is an apocalyptic number.

6439212864475 is a deficient number, since it is larger than the sum of its proper divisors (1545411087505).

6439212864475 is a wasteful number, since it uses less digits than its factorization.

6439212864475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257568514589 (or 257568514584 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 61.

The spelling of 6439212864475 in words is "six trillion, four hundred thirty-nine billion, two hundred twelve million, eight hundred sixty-four thousand, four hundred seventy-five".