13523340345 has 64 divisors (see below), whose sum is σ = 23834062080. Its totient is φ = 6522467328.

The previous prime is 13523340343. The next prime is 13523340371. The reversal of 13523340345 is 54304332531.

It is not a de Polignac number, because 13523340345 - 2¹ = 13523340343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13523340343) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 546787 + ... + 570983.

It is an arithmetic number, because the mean of its divisors is an integer number (372407220).

Almost surely, 2^13523340345 is an apocalyptic number.

13523340345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13523340345 is a deficient number, since it is larger than the sum of its proper divisors (10310721735).

13523340345 is a wasteful number, since it uses less digits than its factorization.

13523340345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24314.

The product of its (nonzero) digits is 64800, while the sum is 33.

Adding to 13523340345 its reverse (54304332531), we get a palindrome (67827672876).

The spelling of 13523340345 in words is "thirteen billion, five hundred twenty-three million, three hundred forty thousand, three hundred forty-five".