13281188245 has 16 divisors (see below), whose sum is σ = 17170861680. Its totient is φ = 9803372544.

The previous prime is 13281188201. The next prime is 13281188251. The reversal of 13281188245 is 54288118231.

It can be written as a sum of positive squares in 8 ways, for example, as 5561281476 + 7719906769 = 74574^2 + 87863^2 .

It is a cyclic number.

It is not a de Polignac number, because 13281188245 - 2¹¹ = 13281186197 is a prime.

It is a super-2 number, since 2×13281188245² (a number of 21 digits) contains 22 as substring.

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, 109861 + ... + 196549.

It is an arithmetic number, because the mean of its divisors is an integer number (1073178855).

Almost surely, 2^13281188245 is an apocalyptic number.

It is an amenable number.

13281188245 is a deficient number, since it is larger than the sum of its proper divisors (3889673435).

13281188245 is a wasteful number, since it uses less digits than its factorization.

13281188245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89064.

The product of its digits is 122880, while the sum is 43.

The spelling of 13281188245 in words is "thirteen billion, two hundred eighty-one million, one hundred eighty-eight thousand, two hundred forty-five".