13277516665 has 8 divisors (see below), whose sum is σ = 18209165760. Its totient is φ = 9104582832.

The previous prime is 13277516663. The next prime is 13277516677. The reversal of 13277516665 is 56661577231.

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

It is a cyclic number.

It is not a de Polignac number, because 13277516665 - 2¹ = 13277516663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13277516663) 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, 189678775 + ... + 189678844.

It is an arithmetic number, because the mean of its divisors is an integer number (2276145720).

Almost surely, 2^13277516665 is an apocalyptic number.

It is an amenable number.

13277516665 is a deficient number, since it is larger than the sum of its proper divisors (4931649095).

13277516665 is an equidigital number, since it uses as much as digits as its factorization.

13277516665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379357631.

The product of its digits is 1587600, while the sum is 49.

The spelling of 13277516665 in words is "thirteen billion, two hundred seventy-seven million, five hundred sixteen thousand, six hundred sixty-five".