16447839868 has 12 divisors (see below), whose sum is σ = 29776262040. Its totient is φ = 7940336432.

The previous prime is 16447839851. The next prime is 16447839901. The reversal of 16447839868 is 86893874461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70895746 + ... + 70895977.

It is an arithmetic number, because the mean of its divisors is an integer number (2481355170).

Almost surely, 2^16447839868 is an apocalyptic number.

It is an amenable number.

16447839868 is a deficient number, since it is larger than the sum of its proper divisors (13328422172).

16447839868 is a wasteful number, since it uses less digits than its factorization.

16447839868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141791756 (or 141791754 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 64.

The spelling of 16447839868 in words is "sixteen billion, four hundred forty-seven million, eight hundred thirty-nine thousand, eight hundred sixty-eight".