162603304081 has 3 divisors (see below), whose sum is σ = 162603707323. Its totient is φ = 162602900840.

The previous prime is 162603304021. The next prime is 162603304091. The reversal of 162603304081 is 180403306261.

It is a happy number.

The square root of 162603304081 is 403241.

It is a perfect power (a square), and thus also a powerful number.

162603304081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 162577497681 + 25806400 = 403209^2 + 5080^2 .

It is not a de Polignac number, because 162603304081 - 2⁷ = 162603303953 is a prime.

It is a super-2 number, since 2×162603304081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162603304021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 201621 + ... + 604861.

Almost surely, 2^162603304081 is an apocalyptic number.

162603304081 is the 403241-st square number.

162603304081 is the 201621-st centered octagonal number.

It is an amenable number.

162603304081 is a deficient number, since it is larger than the sum of its proper divisors (403242).

162603304081 is an frugal number, since it uses more digits than its factorization.

162603304081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806482 (or 403241 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 162603304081 in words is "one hundred sixty-two billion, six hundred three million, three hundred four thousand, eighty-one".