851009343427 has 2 divisors, whose sum is σ = 851009343428. Its totient is φ = 851009343426.

The previous prime is 851009343413. The next prime is 851009343449. The reversal of 851009343427 is 724343900158.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 851009343427 - 2¹¹ = 851009341379 is a prime.

It is not a weakly prime, because it can be changed into another prime (851009343467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425504671713 + 425504671714.

It is an arithmetic number, because the mean of its divisors is an integer number (425504671714).

Almost surely, 2^851009343427 is an apocalyptic number.

851009343427 is a deficient number, since it is larger than the sum of its proper divisors (1).

851009343427 is an equidigital number, since it uses as much as digits as its factorization.

851009343427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 851009343427 in words is "eight hundred fifty-one billion, nine million, three hundred forty-three thousand, four hundred twenty-seven".