6442336636534 has 4 divisors (see below), whose sum is σ = 9663504954804. Its totient is φ = 3221168318266.

The previous prime is 6442336636499. The next prime is 6442336636601. The reversal of 6442336636534 is 4356366332446.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610584159132 + ... + 1610584159135.

It is an arithmetic number, because the mean of its divisors is an integer number (2415876238701).

Almost surely, 2^{6442336636534} is an apocalyptic number.

6442336636534 is a deficient number, since it is larger than the sum of its proper divisors (3221168318270).

6442336636534 is a wasteful number, since it uses less digits than its factorization.

6442336636534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221168318269.

The product of its digits is 67184640, while the sum is 55.

The spelling of 6442336636534 in words is "six trillion, four hundred forty-two billion, three hundred thirty-six million, six hundred thirty-six thousand, five hundred thirty-four".