2126911806845 has 48 divisors (see below), whose sum is σ = 2981545822080. Its totient is φ = 1452296797056.

The previous prime is 2126911806793. The next prime is 2126911806869. The reversal of 2126911806845 is 5486081196212.

It is not a de Polignac number, because 2126911806845 - 2¹⁶ = 2126911741309 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93524486 + ... + 93547224.

It is an arithmetic number, because the mean of its divisors is an integer number (62115537960).

Almost surely, 2^{2126911806845} is an apocalyptic number.

It is an amenable number.

2126911806845 is a deficient number, since it is larger than the sum of its proper divisors (854634015235).

2126911806845 is a wasteful number, since it uses less digits than its factorization.

2126911806845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24354 (or 24347 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 2126911806845 in words is "two trillion, one hundred twenty-six billion, nine hundred eleven million, eight hundred six thousand, eight hundred forty-five".