852388922509 has 2 divisors, whose sum is σ = 852388922510. Its totient is φ = 852388922508.

The previous prime is 852388922503. The next prime is 852388922519. The reversal of 852388922509 is 905229883258.

852388922509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 847937097225 + 4451825284 = 920835^2 + 66722^2 .

It is a cyclic number.

It is not a de Polignac number, because 852388922509 - 2⁵ = 852388922477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852388922503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426194461254 + 426194461255.

It is an arithmetic number, because the mean of its divisors is an integer number (426194461255).

Almost surely, 2^852388922509 is an apocalyptic number.

It is an amenable number.

852388922509 is a deficient number, since it is larger than the sum of its proper divisors (1).

852388922509 is an equidigital number, since it uses as much as digits as its factorization.

852388922509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24883200, while the sum is 61.

The spelling of 852388922509 in words is "eight hundred fifty-two billion, three hundred eighty-eight million, nine hundred twenty-two thousand, five hundred nine".