2126471031869 has 4 divisors (see below), whose sum is σ = 2126477095644. Its totient is φ = 2126464968096.

The previous prime is 2126471031863. The next prime is 2126471031877. The reversal of 2126471031869 is 9681301746212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1241526320644 + 884944711225 = 1114238^2 + 940715^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126471031869 - 2²⁰ = 2126469983293 is a prime.

It is a super-2 number, since 2×2126471031869² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126471031863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471312 + ... + 3218745.

It is an arithmetic number, because the mean of its divisors is an integer number (531619273911).

Almost surely, 2^{2126471031869} is an apocalyptic number.

It is an amenable number.

2126471031869 is a deficient number, since it is larger than the sum of its proper divisors (6063775).

2126471031869 is an equidigital number, since it uses as much as digits as its factorization.

2126471031869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6063774.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 2126471031869 in words is "two trillion, one hundred twenty-six billion, four hundred seventy-one million, thirty-one thousand, eight hundred sixty-nine".