847742622197 has 2 divisors, whose sum is σ = 847742622198. Its totient is φ = 847742622196.

The previous prime is 847742622163. The next prime is 847742622203. The reversal of 847742622197 is 791226247748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 831937355236 + 15805266961 = 912106^2 + 125719^2 .

It is a cyclic number.

It is not a de Polignac number, because 847742622197 - 2¹⁸ = 847742360053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (847742622137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423871311098 + 423871311099.

It is an arithmetic number, because the mean of its divisors is an integer number (423871311099).

Almost surely, 2^847742622197 is an apocalyptic number.

It is an amenable number.

847742622197 is a deficient number, since it is larger than the sum of its proper divisors (1).

847742622197 is an equidigital number, since it uses as much as digits as its factorization.

847742622197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18966528, while the sum is 59.

The spelling of 847742622197 in words is "eight hundred forty-seven billion, seven hundred forty-two million, six hundred twenty-two thousand, one hundred ninety-seven".