819694127816 has 16 divisors (see below), whose sum is σ = 1536951926400. Its totient is φ = 409840280784.

The previous prime is 819694127803. The next prime is 819694127843. The reversal of 819694127816 is 618721496918.

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, 314576 + ... + 1318463.

It is an arithmetic number, because the mean of its divisors is an integer number (96059495400).

Almost surely, 2^819694127816 is an apocalyptic number.

It is an amenable number.

819694127816 is a deficient number, since it is larger than the sum of its proper divisors (717257798584).

819694127816 is a wasteful number, since it uses less digits than its factorization.

819694127816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695788 (or 1695784 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 62.

The spelling of 819694127816 in words is "eight hundred nineteen billion, six hundred ninety-four million, one hundred twenty-seven thousand, eight hundred sixteen".