163603812606 has 16 divisors (see below), whose sum is σ = 352377442704. Its totient is φ = 50339634624.

The previous prime is 163603812551. The next prime is 163603812607. The reversal of 163603812606 is 606218306361.

It is a super-2 number, since 2×163603812606² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163603812607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1048742311 + ... + 1048742466.

It is an arithmetic number, because the mean of its divisors is an integer number (22023590169).

Almost surely, 2^163603812606 is an apocalyptic number.

163603812606 is an abundant number, since it is smaller than the sum of its proper divisors (188773630098).

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

163603812606 is a wasteful number, since it uses less digits than its factorization.

163603812606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097484795.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 163603812606 in words is "one hundred sixty-three billion, six hundred three million, eight hundred twelve thousand, six hundred six".