847564893953 has 2 divisors, whose sum is σ = 847564893954. Its totient is φ = 847564893952.

The previous prime is 847564893919. The next prime is 847564893971. The reversal of 847564893953 is 359398465748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502634207089 + 344930686864 = 708967^2 + 587308^2 .

It is a cyclic number.

It is not a de Polignac number, because 847564893953 - 2¹⁰ = 847564892929 is a prime.

It is not a weakly prime, because it can be changed into another prime (847564895953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423782446976 + 423782446977.

It is an arithmetic number, because the mean of its divisors is an integer number (423782446977).

Almost surely, 2^847564893953 is an apocalyptic number.

It is an amenable number.

847564893953 is a deficient number, since it is larger than the sum of its proper divisors (1).

847564893953 is an equidigital number, since it uses as much as digits as its factorization.

847564893953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 783820800, while the sum is 71.

The spelling of 847564893953 in words is "eight hundred forty-seven billion, five hundred sixty-four million, eight hundred ninety-three thousand, nine hundred fifty-three".