13666058836 has 6 divisors (see below), whose sum is σ = 23915602970. Its totient is φ = 6833029416.

The previous prime is 13666058831. The next prime is 13666058839. The reversal of 13666058836 is 63885066631.

It can be written as a sum of positive squares in only one way, i.e., 9932115600 + 3733943236 = 99660^2 + 61106^2 .

It is a super-2 number, since 2×13666058836² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666058831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1708257351 + ... + 1708257358.

Almost surely, 2^13666058836 is an apocalyptic number.

It is an amenable number.

13666058836 is a deficient number, since it is larger than the sum of its proper divisors (10249544134).

13666058836 is a wasteful number, since it uses less digits than its factorization.

13666058836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416514713 (or 3416514711 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 13666058836 in words is "thirteen billion, six hundred sixty-six million, fifty-eight thousand, eight hundred thirty-six".