13129424936 has 16 divisors (see below), whose sum is σ = 24620843700. Its totient is φ = 6563866624.

The previous prime is 13129424927. The next prime is 13129424963. The reversal of 13129424936 is 63942492131.

It can be written as a sum of positive squares in 2 ways, for example, as 10182020836 + 2947404100 = 100906^2 + 54290^2 .

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, 37145 + ... + 166248.

Almost surely, 2^13129424936 is an apocalyptic number.

It is an amenable number.

13129424936 is a deficient number, since it is larger than the sum of its proper divisors (11491418764).

13129424936 is a wasteful number, since it uses less digits than its factorization.

13129424936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211468 (or 211464 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The spelling of 13129424936 in words is "thirteen billion, one hundred twenty-nine million, four hundred twenty-four thousand, nine hundred thirty-six".