13663660436 has 6 divisors (see below), whose sum is σ = 23911405770. Its totient is φ = 6831830216.

The previous prime is 13663660429. The next prime is 13663660453. The reversal of 13663660436 is 63406636631.

It can be written as a sum of positive squares in only one way, i.e., 13631963536 + 31696900 = 116756^2 + 5630^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1707957551 + ... + 1707957558.

It is an arithmetic number, because the mean of its divisors is an integer number (3985234295).

Almost surely, 2^13663660436 is an apocalyptic number.

It is an amenable number.

13663660436 is a deficient number, since it is larger than the sum of its proper divisors (10247745334).

13663660436 is a wasteful number, since it uses less digits than its factorization.

13663660436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415915113 (or 3415915111 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 44.

The spelling of 13663660436 in words is "thirteen billion, six hundred sixty-three million, six hundred sixty thousand, four hundred thirty-six".