2169042636289 has 3 divisors (see below), whose sum is σ = 2169044109057. Its totient is φ = 2169041163522.

The previous prime is 2169042636263. The next prime is 2169042636329. The reversal of 2169042636289 is 9826362409612.

The square root of 2169042636289 is 1472767.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-2169042636289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2169042636589) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 736384 + ... + 2209150.

It is an arithmetic number, because the mean of its divisors is an integer number (723014703019).

Almost surely, 2^{2169042636289} is an apocalyptic number.

2169042636289 is the 1472767-th square number.

2169042636289 is the 736384-th centered octagonal number.

It is an amenable number.

2169042636289 is a deficient number, since it is larger than the sum of its proper divisors (1472768).

2169042636289 is an frugal number, since it uses more digits than its factorization.

2169042636289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945534 (or 1472767 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 58.

The spelling of 2169042636289 in words is "two trillion, one hundred sixty-nine billion, forty-two million, six hundred thirty-six thousand, two hundred eighty-nine".