13718852986609 has 9 divisors (see below), whose sum is σ = 14341347470233. Its totient is φ = 13122299631892.

The previous prime is 13718852986561. The next prime is 13718852986673. The reversal of 13718852986609 is 90668925881731.

The square root of 13718852986609 is 3703897.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 13718852986609 - 2⁷ = 13718852986481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13718852186609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 85109112 + ... + 85270150.

Almost surely, 2^{13718852986609} is an apocalyptic number.

13718852986609 is the 3703897-th square number.

13718852986609 is the 1851949-th centered octagonal number.

It is an amenable number.

13718852986609 is a deficient number, since it is larger than the sum of its proper divisors (622494483624).

13718852986609 is an frugal number, since it uses more digits than its factorization.

13718852986609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322124 (or 161062 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 73.

The spelling of 13718852986609 in words is "thirteen trillion, seven hundred eighteen billion, eight hundred fifty-two million, nine hundred eighty-six thousand, six hundred nine".