13666017860 has 48 divisors (see below), whose sum is σ = 31329970560. Its totient is φ = 4965911040.

The previous prime is 13666017823. The next prime is 13666017917. The reversal of 13666017860 is 6871066631.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296876 + ... + 339804.

It is an arithmetic number, because the mean of its divisors is an integer number (652707720).

Almost surely, 2^13666017860 is an apocalyptic number.

13666017860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13666017860 is an abundant number, since it is smaller than the sum of its proper divisors (17663952700).

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

13666017860 is a wasteful number, since it uses less digits than its factorization.

13666017860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44396 (or 44394 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 13666017860 in words is "thirteen billion, six hundred sixty-six million, seventeen thousand, eight hundred sixty".