13216415445 has 24 divisors (see below), whose sum is σ = 23040885816. Its totient is φ = 7008006528.

The previous prime is 13216415431. The next prime is 13216415483. The reversal of 13216415445 is 54451461231.

13216415445 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 641 + 5 + 4 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4939418961 + 8276996484 = 70281^2 + 90978^2 .

It is not a de Polignac number, because 13216415445 - 2⁸ = 13216415189 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 841054 + ... + 856623.

It is an arithmetic number, because the mean of its divisors is an integer number (960036909).

Almost surely, 2^13216415445 is an apocalyptic number.

13216415445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13216415445 is a deficient number, since it is larger than the sum of its proper divisors (9824470371).

13216415445 is a wasteful number, since it uses less digits than its factorization.

13216415445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697861 (or 1697858 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 13216415445 its reverse (54451461231), we get a palindrome (67667876676).

The spelling of 13216415445 in words is "thirteen billion, two hundred sixteen million, four hundred fifteen thousand, four hundred forty-five".