13215334545 has 96 divisors (see below), whose sum is σ = 27637977600. Its totient is φ = 5973149952.

The previous prime is 13215334543. The next prime is 13215334619. The reversal of 13215334545 is 54543351231.

13215334545 is a `hidden beast` number, since 1 + 32 + 1 + 53 + 34 + 545 = 666.

It is not a de Polignac number, because 13215334545 - 2¹ = 13215334543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13215334543) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 577512 + ... + 599958.

It is an arithmetic number, because the mean of its divisors is an integer number (287895600).

Almost surely, 2^13215334545 is an apocalyptic number.

13215334545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13215334545 is an abundant number, since it is smaller than the sum of its proper divisors (14422643055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13215334545 is a wasteful number, since it uses less digits than its factorization.

13215334545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22564 (or 22551 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

Adding to 13215334545 its reverse (54543351231), we get a palindrome (67758685776).

The spelling of 13215334545 in words is "thirteen billion, two hundred fifteen million, three hundred thirty-four thousand, five hundred forty-five".