6439382689507 has 4 divisors (see below), whose sum is σ = 6448810776120. Its totient is φ = 6429954602896.

The previous prime is 6439382689489. The next prime is 6439382689541. The reversal of 6439382689507 is 7059862839346.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6439382689507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6439382689007) 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 in 3 ways as a sum of consecutive naturals, for example, 4714042282 + ... + 4714043647.

It is an arithmetic number, because the mean of its divisors is an integer number (1612202694030).

Almost surely, 2^{6439382689507} is an apocalyptic number.

6439382689507 is a deficient number, since it is larger than the sum of its proper divisors (9428086613).

6439382689507 is an equidigital number, since it uses as much as digits as its factorization.

6439382689507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9428086612.

The product of its (nonzero) digits is 470292480, while the sum is 70.

The spelling of 6439382689507 in words is "six trillion, four hundred thirty-nine billion, three hundred eighty-two million, six hundred eighty-nine thousand, five hundred seven".