13666142656 has 28 divisors (see below), whose sum is σ = 27298365520. Its totient is φ = 6787814400.

The previous prime is 13666142629. The next prime is 13666142657. The reversal of 13666142656 is 65624166631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666142657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697401 + ... + 716728.

Almost surely, 2^13666142656 is an apocalyptic number.

13666142656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13666142656 is a deficient number, since it is larger than the sum of its proper divisors (13632222864).

13666142656 is a wasteful number, since it uses less digits than its factorization.

13666142656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414292 (or 1414282 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The spelling of 13666142656 in words is "thirteen billion, six hundred sixty-six million, one hundred forty-two thousand, six hundred fifty-six".