13145135434 has 8 divisors (see below), whose sum is σ = 19719646020. Its totient is φ = 6571920096.

The previous prime is 13145135413. The next prime is 13145135449. The reversal of 13145135434 is 43453154131.

It can be written as a sum of positive squares in 2 ways, for example, as 11356099225 + 1789036209 = 106565^2 + 42297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13145135434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298029 + ... + 339280.

Almost surely, 2^13145135434 is an apocalyptic number.

13145135434 is a deficient number, since it is larger than the sum of its proper divisors (6574510586).

13145135434 is a wasteful number, since it uses less digits than its factorization.

13145135434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647624.

The product of its digits is 43200, while the sum is 34.

Adding to 13145135434 its reverse (43453154131), we get a palindrome (56598289565).

The spelling of 13145135434 in words is "thirteen billion, one hundred forty-five million, one hundred thirty-five thousand, four hundred thirty-four".