13660511217 has 8 divisors (see below), whose sum is σ = 18215535840. Its totient is φ = 9106247040.

The previous prime is 13660511107. The next prime is 13660511273. The reversal of 13660511217 is 71211506631.

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

It is not a de Polignac number, because 13660511217 - 2⁷ = 13660511089 is a prime.

It is a super-3 number, since 3×13660511217³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13660511297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146784 + ... + 221057.

It is an arithmetic number, because the mean of its divisors is an integer number (2276941980).

Almost surely, 2^13660511217 is an apocalyptic number.

It is an amenable number.

13660511217 is a deficient number, since it is larger than the sum of its proper divisors (4555024623).

13660511217 is a wasteful number, since it uses less digits than its factorization.

13660511217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380223.

The product of its (nonzero) digits is 7560, while the sum is 33.

The spelling of 13660511217 in words is "thirteen billion, six hundred sixty million, five hundred eleven thousand, two hundred seventeen".