13877837738209 has 9 divisors (see below), whose sum is σ = 13940092344081. Its totient is φ = 13815859972020.

The previous prime is 13877837738189. The next prime is 13877837738213. The reversal of 13877837738209 is 90283773877831.

The square root of 13877837738209 is 3725297.

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

It is not a de Polignac number, because 13877837738209 - 2¹³ = 13877837730017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13877837738909) 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, 845634214 + ... + 845650624.

Almost surely, 2^{13877837738209} is an apocalyptic number.

13877837738209 is the 3725297-th square number.

13877837738209 is the 1862649-th centered octagonal number.

It is an amenable number.

13877837738209 is a deficient number, since it is larger than the sum of its proper divisors (62254605872).

13877837738209 is an frugal number, since it uses more digits than its factorization.

13877837738209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33276 (or 16638 counting only the distinct ones).

The product of its (nonzero) digits is 597445632, while the sum is 73.

The spelling of 13877837738209 in words is "thirteen trillion, eight hundred seventy-seven billion, eight hundred thirty-seven million, seven hundred thirty-eight thousand, two hundred nine".