163994982836 has 24 divisors (see below), whose sum is σ = 287661507840. Its totient is φ = 81806067200.

The previous prime is 163994982829. The next prime is 163994982859. The reversal of 163994982836 is 638289499361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10417091 + ... + 10432821.

It is an arithmetic number, because the mean of its divisors is an integer number (11985896160).

Almost surely, 2^163994982836 is an apocalyptic number.

It is an amenable number.

163994982836 is a deficient number, since it is larger than the sum of its proper divisors (123666525004).

163994982836 is a wasteful number, since it uses less digits than its factorization.

163994982836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21655 (or 21653 counting only the distinct ones).

The product of its digits is 120932352, while the sum is 68.

The spelling of 163994982836 in words is "one hundred sixty-three billion, nine hundred ninety-four million, nine hundred eighty-two thousand, eight hundred thirty-six".