2112798893549 has 2 divisors, whose sum is σ = 2112798893550. Its totient is φ = 2112798893548.

The previous prime is 2112798893539. The next prime is 2112798893561. The reversal of 2112798893549 is 9453988972112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1997007054025 + 115791839524 = 1413155^2 + 340282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112798893549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112798893539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056399446774 + 1056399446775.

It is an arithmetic number, because the mean of its divisors is an integer number (1056399446775).

Almost surely, 2^{2112798893549} is an apocalyptic number.

It is an amenable number.

2112798893549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112798893549 is an equidigital number, since it uses as much as digits as its factorization.

2112798893549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 68.

The spelling of 2112798893549 in words is "two trillion, one hundred twelve billion, seven hundred ninety-eight million, eight hundred ninety-three thousand, five hundred forty-nine".