2126286816769 has 16 divisors (see below), whose sum is σ = 2297233641600. Its totient is φ = 1962003326976.

The previous prime is 2126286816761. The next prime is 2126286816779. The reversal of 2126286816769 is 9676186826212.

It is a cyclic number.

It is not a de Polignac number, because 2126286816769 - 2³ = 2126286816761 is a prime.

It is a super-2 number, since 2×2126286816769² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2126286816769.

It is not an unprimeable number, because it can be changed into a prime (2126286816761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613359 + ... + 2151460.

It is an arithmetic number, because the mean of its divisors is an integer number (143577102600).

Almost surely, 2^{2126286816769} is an apocalyptic number.

2126286816769 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2126286816769 is a deficient number, since it is larger than the sum of its proper divisors (170946824831).

2126286816769 is a wasteful number, since it uses less digits than its factorization.

2126286816769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766024.

The product of its digits is 41803776, while the sum is 64.

The spelling of 2126286816769 in words is "two trillion, one hundred twenty-six billion, two hundred eighty-six million, eight hundred sixteen thousand, seven hundred sixty-nine".