13617013657666 has 8 divisors (see below), whose sum is σ = 21084408244224. Its totient is φ = 6588877576260.

The previous prime is 13617013657657. The next prime is 13617013657693. The reversal of 13617013657666 is 66675631071631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13617013657666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109814626210 + ... + 109814626333.

It is an arithmetic number, because the mean of its divisors is an integer number (2635551030528).

Almost surely, 2^{13617013657666} is an apocalyptic number.

13617013657666 is a deficient number, since it is larger than the sum of its proper divisors (7467394586558).

13617013657666 is a wasteful number, since it uses less digits than its factorization.

13617013657666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219629252576.

The product of its (nonzero) digits is 17146080, while the sum is 58.

The spelling of 13617013657666 in words is "thirteen trillion, six hundred seventeen billion, thirteen million, six hundred fifty-seven thousand, six hundred sixty-six".