13111706836 has 6 divisors (see below), whose sum is σ = 22945486970. Its totient is φ = 6555853416.

The previous prime is 13111706831. The next prime is 13111706857. The reversal of 13111706836 is 63860711131.

It can be written as a sum of positive squares in only one way, i.e., 12157267600 + 954439236 = 110260^2 + 30894^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13111706795 and 13111706804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111706831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1638963351 + ... + 1638963358.

Almost surely, 2^13111706836 is an apocalyptic number.

It is an amenable number.

13111706836 is a deficient number, since it is larger than the sum of its proper divisors (9833780134).

13111706836 is a wasteful number, since it uses less digits than its factorization.

13111706836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277926713 (or 3277926711 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 13111706836 in words is "thirteen billion, one hundred eleven million, seven hundred six thousand, eight hundred thirty-six".