15003212305 has 4 divisors (see below), whose sum is σ = 18003854772. Its totient is φ = 12002569840.

The previous prime is 15003212299. The next prime is 15003212309. The reversal of 15003212305 is 50321230051.

15003212305 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 an emirpimes, since its reverse is a distinct semiprime: 50321230051 = 4451 ⋅11305601.

It can be written as a sum of positive squares in 2 ways, for example, as 11382542721 + 3620669584 = 106689^2 + 60172^2 .

It is not a de Polignac number, because 15003212305 - 2¹⁹ = 15002688017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15003212309) by changing a digit.

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, 1500321226 + ... + 1500321235.

It is an arithmetic number, because the mean of its divisors is an integer number (4500963693).

Almost surely, 2^15003212305 is an apocalyptic number.

It is an amenable number.

15003212305 is a deficient number, since it is larger than the sum of its proper divisors (3000642467).

15003212305 is an equidigital number, since it uses as much as digits as its factorization.

15003212305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000642466.

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 15003212305 its reverse (50321230051), we get a palindrome (65324442356).

The spelling of 15003212305 in words is "fifteen billion, three million, two hundred twelve thousand, three hundred five".