852167980849 has 2 divisors, whose sum is σ = 852167980850. Its totient is φ = 852167980848.

The previous prime is 852167980847. The next prime is 852167980891. The reversal of 852167980849 is 948089761258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 598209433600 + 253958547249 = 773440^2 + 503943^2 .

It is a cyclic number.

It is not a de Polignac number, because 852167980849 - 2¹ = 852167980847 is a prime.

Together with 852167980847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (852167980847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426083990424 + 426083990425.

It is an arithmetic number, because the mean of its divisors is an integer number (426083990425).

Almost surely, 2^852167980849 is an apocalyptic number.

It is an amenable number.

852167980849 is a deficient number, since it is larger than the sum of its proper divisors (1).

852167980849 is an equidigital number, since it uses as much as digits as its factorization.

852167980849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69672960, while the sum is 67.

The spelling of 852167980849 in words is "eight hundred fifty-two billion, one hundred sixty-seven million, nine hundred eighty thousand, eight hundred forty-nine".