847823451169 has 2 divisors, whose sum is σ = 847823451170. Its totient is φ = 847823451168.

The previous prime is 847823451133. The next prime is 847823451263. The reversal of 847823451169 is 961154328748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442198400400 + 405625050769 = 664980^2 + 636887^2 .

It is a cyclic number.

It is not a de Polignac number, because 847823451169 - 2²⁷ = 847689233441 is a prime.

It is a super-2 number, since 2×847823451169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (847823451269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423911725584 + 423911725585.

It is an arithmetic number, because the mean of its divisors is an integer number (423911725585).

Almost surely, 2^847823451169 is an apocalyptic number.

It is an amenable number.

847823451169 is a deficient number, since it is larger than the sum of its proper divisors (1).

847823451169 is an equidigital number, since it uses as much as digits as its factorization.

847823451169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 58.

The spelling of 847823451169 in words is "eight hundred forty-seven billion, eight hundred twenty-three million, four hundred fifty-one thousand, one hundred sixty-nine".