13531539634 has 24 divisors (see below), whose sum is σ = 20695605840. Its totient is φ = 6634593432.

The previous prime is 13531539631. The next prime is 13531539701. The reversal of 13531539634 is 43693513531.

It is not an unprimeable number, because it can be changed into a prime (13531539631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3205177 + ... + 3209395.

It is an arithmetic number, because the mean of its divisors is an integer number (862316910).

Almost surely, 2^13531539634 is an apocalyptic number.

13531539634 is a deficient number, since it is larger than the sum of its proper divisors (7164066206).

13531539634 is an equidigital number, since it uses as much as digits as its factorization.

13531539634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4582 (or 4443 counting only the distinct ones).

The product of its digits is 437400, while the sum is 43.

The spelling of 13531539634 in words is "thirteen billion, five hundred thirty-one million, five hundred thirty-nine thousand, six hundred thirty-four".