852109092691 has 2 divisors, whose sum is σ = 852109092692. Its totient is φ = 852109092690.

The previous prime is 852109092689. The next prime is 852109092733. The reversal of 852109092691 is 196290901258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 852109092691 - 2¹ = 852109092689 is a prime.

Together with 852109092689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (852109092091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426054546345 + 426054546346.

It is an arithmetic number, because the mean of its divisors is an integer number (426054546346).

Almost surely, 2^852109092691 is an apocalyptic number.

852109092691 is a deficient number, since it is larger than the sum of its proper divisors (1).

852109092691 is an equidigital number, since it uses as much as digits as its factorization.

852109092691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 852109092691 in words is "eight hundred fifty-two billion, one hundred nine million, ninety-two thousand, six hundred ninety-one".