13123659834 has 12 divisors (see below), whose sum is σ = 28434596346. Its totient is φ = 4374553272.

The previous prime is 13123659811. The next prime is 13123659839. The reversal of 13123659834 is 43895632131.

13123659834 is a `hidden beast` number, since 1 + 3 + 1 + 23 + 6 + 598 + 34 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8455354209 + 4668305625 = 91953^2 + 68325^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13123659834.

It is not an unprimeable number, because it can be changed into a prime (13123659839) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364546089 + ... + 364546124.

Almost surely, 2^13123659834 is an apocalyptic number.

13123659834 is an abundant number, since it is smaller than the sum of its proper divisors (15310936512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123659834 is a wasteful number, since it uses less digits than its factorization.

13123659834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729092221 (or 729092218 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The spelling of 13123659834 in words is "thirteen billion, one hundred twenty-three million, six hundred fifty-nine thousand, eight hundred thirty-four".