83866985828 has 12 divisors (see below), whose sum is σ = 146772658032. Its totient is φ = 41931940680.

The previous prime is 83866985789. The next prime is 83866985833. The reversal of 83866985828 is 82858966838.

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, 261938 + ... + 486153.

It is an arithmetic number, because the mean of its divisors is an integer number (12231054836).

Almost surely, 2^83866985828 is an apocalyptic number.

It is an amenable number.

83866985828 is a deficient number, since it is larger than the sum of its proper divisors (62905672204).

83866985828 is a wasteful number, since it uses less digits than its factorization.

83866985828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776122 (or 776120 counting only the distinct ones).

The product of its digits is 318504960, while the sum is 71.

The spelling of 83866985828 in words is "eighty-three billion, eight hundred sixty-six million, nine hundred eighty-five thousand, eight hundred twenty-eight".