856424228953 has 2 divisors, whose sum is σ = 856424228954. Its totient is φ = 856424228952.

The previous prime is 856424228873. The next prime is 856424228963. The reversal of 856424228953 is 359822424658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855824811664 + 599417289 = 925108^2 + 24483^2 .

It is a cyclic number.

It is not a de Polignac number, because 856424228953 - 2⁹ = 856424228441 is a prime.

It is not a weakly prime, because it can be changed into another prime (856424228963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428212114476 + 428212114477.

It is an arithmetic number, because the mean of its divisors is an integer number (428212114477).

Almost surely, 2^856424228953 is an apocalyptic number.

It is an amenable number.

856424228953 is a deficient number, since it is larger than the sum of its proper divisors (1).

856424228953 is an equidigital number, since it uses as much as digits as its factorization.

856424228953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33177600, while the sum is 58.

The spelling of 856424228953 in words is "eight hundred fifty-six billion, four hundred twenty-four million, two hundred twenty-eight thousand, nine hundred fifty-three".