163320425806 has 16 divisors (see below), whose sum is σ = 247380183648. Its totient is φ = 80860500000.

The previous prime is 163320425797. The next prime is 163320425837. The reversal of 163320425806 is 608524023361.

163320425806 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163320425806² (a number of 23 digits) contains 22 as substring.

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, 3084556 + ... + 3137056.

It is an arithmetic number, because the mean of its divisors is an integer number (15461261478).

Almost surely, 2^163320425806 is an apocalyptic number.

163320425806 is a deficient number, since it is larger than the sum of its proper divisors (84059757842).

163320425806 is a wasteful number, since it uses less digits than its factorization.

163320425806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67707.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 163320425806 in words is "one hundred sixty-three billion, three hundred twenty million, four hundred twenty-five thousand, eight hundred six".