13145334243 has 32 divisors (see below), whose sum is σ = 18780975360. Its totient is φ = 8154368640.

The previous prime is 13145334239. The next prime is 13145334311. The reversal of 13145334243 is 34243354131.

It is not a de Polignac number, because 13145334243 - 2² = 13145334239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13145334203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 810433 + ... + 826493.

It is an arithmetic number, because the mean of its divisors is an integer number (586905480).

Almost surely, 2^13145334243 is an apocalyptic number.

13145334243 is a deficient number, since it is larger than the sum of its proper divisors (5635641117).

13145334243 is a wasteful number, since it uses less digits than its factorization.

13145334243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16339.

The product of its digits is 51840, while the sum is 33.

Adding to 13145334243 its reverse (34243354131), we get a palindrome (47388688374).

The spelling of 13145334243 in words is "thirteen billion, one hundred forty-five million, three hundred thirty-four thousand, two hundred forty-three".