21834066798773 has 2 divisors, whose sum is σ = 21834066798774. Its totient is φ = 21834066798772.

The previous prime is 21834066798757. The next prime is 21834066798833. The reversal of 21834066798773 is 37789766043812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12117486316324 + 9716580482449 = 3481018^2 + 3117143^2 .

It is a cyclic number.

It is not a de Polignac number, because 21834066798773 - 2⁴ = 21834066798757 is a prime.

It is a super-3 number, since 3×21834066798773³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21834066798697 and 21834066798706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21834066798743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10917033399386 + 10917033399387.

It is an arithmetic number, because the mean of its divisors is an integer number (10917033399387).

Almost surely, 2^{21834066798773} is an apocalyptic number.

It is an amenable number.

21834066798773 is a deficient number, since it is larger than the sum of its proper divisors (1).

21834066798773 is an equidigital number, since it uses as much as digits as its factorization.

21834066798773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512096256, while the sum is 71.

The spelling of 21834066798773 in words is "twenty-one trillion, eight hundred thirty-four billion, sixty-six million, seven hundred ninety-eight thousand, seven hundred seventy-three".