842812451447 has 2 divisors, whose sum is σ = 842812451448. Its totient is φ = 842812451446.

The previous prime is 842812451441. The next prime is 842812451449. The reversal of 842812451447 is 744154218248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842812451447 - 2¹⁰ = 842812450423 is a prime.

Together with 842812451449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 842812451395 and 842812451404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842812451441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421406225723 + 421406225724.

It is an arithmetic number, because the mean of its divisors is an integer number (421406225724).

Almost surely, 2^842812451447 is an apocalyptic number.

842812451447 is a deficient number, since it is larger than the sum of its proper divisors (1).

842812451447 is an equidigital number, since it uses as much as digits as its factorization.

842812451447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2293760, while the sum is 50.

The spelling of 842812451447 in words is "eight hundred forty-two billion, eight hundred twelve million, four hundred fifty-one thousand, four hundred forty-seven".