100504320145 has 4 divisors (see below), whose sum is σ = 120605184180. Its totient is φ = 80403456112.

The previous prime is 100504320113. The next prime is 100504320151. The reversal of 100504320145 is 541023405001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51469089424 + 49035230721 = 226868^2 + 221439^2 .

It is a cyclic number.

It is not a de Polignac number, because 100504320145 - 2⁵ = 100504320113 is a prime.

It is a super-2 number, since 2×100504320145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10050432010 + ... + 10050432019.

It is an arithmetic number, because the mean of its divisors is an integer number (30151296045).

Almost surely, 2^100504320145 is an apocalyptic number.

It is an amenable number.

100504320145 is a deficient number, since it is larger than the sum of its proper divisors (20100864035).

100504320145 is an equidigital number, since it uses as much as digits as its factorization.

100504320145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20100864034.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 100504320145 its reverse (541023405001), we get a palindrome (641527725146).

The spelling of 100504320145 in words is "one hundred billion, five hundred four million, three hundred twenty thousand, one hundred forty-five".