13135240545 has 64 divisors (see below), whose sum is σ = 25213870080. Its totient is φ = 5709040128.

The previous prime is 13135240543. The next prime is 13135240567. The reversal of 13135240545 is 54504253131.

It is not a de Polignac number, because 13135240545 - 2¹ = 13135240543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13135240543) 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, 387021 + ... + 419589.

It is an arithmetic number, because the mean of its divisors is an integer number (393966720).

Almost surely, 2^13135240545 is an apocalyptic number.

13135240545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13135240545 is a deficient number, since it is larger than the sum of its proper divisors (12078629535).

13135240545 is a wasteful number, since it uses less digits than its factorization.

13135240545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32774.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 13135240545 its reverse (54504253131), we get a palindrome (67639493676).

The spelling of 13135240545 in words is "thirteen billion, one hundred thirty-five million, two hundred forty thousand, five hundred forty-five".