163426755806 has 32 divisors (see below), whose sum is σ = 258445624320. Its totient is φ = 77353204896.

The previous prime is 163426755763. The next prime is 163426755853. The reversal of 163426755806 is 608557624361.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5097980 + ... + 5129936.

It is an arithmetic number, because the mean of its divisors is an integer number (8076425760).

Almost surely, 2^163426755806 is an apocalyptic number.

163426755806 is a deficient number, since it is larger than the sum of its proper divisors (95018868514).

163426755806 is a wasteful number, since it uses less digits than its factorization.

163426755806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33128.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 163426755806 in words is "one hundred sixty-three billion, four hundred twenty-six million, seven hundred fifty-five thousand, eight hundred six".