13216230645 has 16 divisors (see below), whose sum is σ = 21159657600. Its totient is φ = 7044093504.

The previous prime is 13216230623. The next prime is 13216230719. The reversal of 13216230645 is 54603261231.

It is not a de Polignac number, because 13216230645 - 2¹⁸ = 13215968501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261169 + ... + 307638.

It is an arithmetic number, because the mean of its divisors is an integer number (1322478600).

Almost surely, 2^13216230645 is an apocalyptic number.

13216230645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13216230645 is a deficient number, since it is larger than the sum of its proper divisors (7943426955).

13216230645 is a wasteful number, since it uses less digits than its factorization.

13216230645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570364.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 13216230645 its reverse (54603261231), we get a palindrome (67819491876).

The spelling of 13216230645 in words is "thirteen billion, two hundred sixteen million, two hundred thirty thousand, six hundred forty-five".