19700823811247 has 2 divisors, whose sum is σ = 19700823811248. Its totient is φ = 19700823811246.

The previous prime is 19700823811187. The next prime is 19700823811259. The reversal of 19700823811247 is 74211832800791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19700823811247 - 2⁶ = 19700823811183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19700823811267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9850411905623 + 9850411905624.

It is an arithmetic number, because the mean of its divisors is an integer number (9850411905624).

Almost surely, 2^{19700823811247} is an apocalyptic number.

19700823811247 is a deficient number, since it is larger than the sum of its proper divisors (1).

19700823811247 is an equidigital number, since it uses as much as digits as its factorization.

19700823811247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The spelling of 19700823811247 in words is "nineteen trillion, seven hundred billion, eight hundred twenty-three million, eight hundred eleven thousand, two hundred forty-seven".