16393759866 has 48 divisors (see below), whose sum is σ = 39009016800. Its totient is φ = 4934456160.

The previous prime is 16393759843. The next prime is 16393759891. The reversal of 16393759866 is 66895739361.

16393759866 is a `hidden beast` number, since 1 + 6 + 3 + 9 + 37 + 598 + 6 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248340 + ... + 307343.

It is an arithmetic number, because the mean of its divisors is an integer number (812687850).

Almost surely, 2^16393759866 is an apocalyptic number.

16393759866 is an abundant number, since it is smaller than the sum of its proper divisors (22615256934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16393759866 is a wasteful number, since it uses less digits than its factorization.

16393759866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555851 (or 555848 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 63.

The spelling of 16393759866 in words is "sixteen billion, three hundred ninety-three million, seven hundred fifty-nine thousand, eight hundred sixty-six".