19700823811133 has 2 divisors, whose sum is σ = 19700823811134. Its totient is φ = 19700823811132.

The previous prime is 19700823811129. The next prime is 19700823811139. The reversal of 19700823811133 is 33111832800791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15915009167044 + 3785814644089 = 3989362^2 + 1945717^2 .

It is a cyclic number.

It is not a de Polignac number, because 19700823811133 - 2² = 19700823811129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19700823811139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9850411905566 + 9850411905567.

It is an arithmetic number, because the mean of its divisors is an integer number (9850411905567).

Almost surely, 2^{19700823811133} is an apocalyptic number.

It is an amenable number.

19700823811133 is a deficient number, since it is larger than the sum of its proper divisors (1).

19700823811133 is an equidigital number, since it uses as much as digits as its factorization.

19700823811133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 19700823811133 in words is "nineteen trillion, seven hundred billion, eight hundred twenty-three million, eight hundred eleven thousand, one hundred thirty-three".