15213237305 has 16 divisors (see below), whose sum is σ = 20885140224. Its totient is φ = 10421298240.

The previous prime is 15213237301. The next prime is 15213237311. The reversal of 15213237305 is 50373231251.

15213237305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15213237305 - 2² = 15213237301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15213237301) 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 15 ways as a sum of consecutive naturals, for example, 186686 + ... + 255495.

It is an arithmetic number, because the mean of its divisors is an integer number (1305321264).

Almost surely, 2^15213237305 is an apocalyptic number.

It is an amenable number.

15213237305 is a deficient number, since it is larger than the sum of its proper divisors (5671902919).

15213237305 is an equidigital number, since it uses as much as digits as its factorization.

15213237305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443176.

The product of its (nonzero) digits is 18900, while the sum is 32.

Adding to 15213237305 its reverse (50373231251), we get a palindrome (65586468556).

The spelling of 15213237305 in words is "fifteen billion, two hundred thirteen million, two hundred thirty-seven thousand, three hundred five".