812976161729 has 2 divisors, whose sum is σ = 812976161730. Its totient is φ = 812976161728.

The previous prime is 812976161693. The next prime is 812976161731. The reversal of 812976161729 is 927161679218.

812976161729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630602751025 + 182373410704 = 794105^2 + 427052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812976161729 is a prime.

Together with 812976161731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (812976161749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406488080864 + 406488080865.

It is an arithmetic number, because the mean of its divisors is an integer number (406488080865).

Almost surely, 2^812976161729 is an apocalyptic number.

It is an amenable number.

812976161729 is a deficient number, since it is larger than the sum of its proper divisors (1).

812976161729 is an equidigital number, since it uses as much as digits as its factorization.

812976161729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 59.

The spelling of 812976161729 in words is "eight hundred twelve billion, nine hundred seventy-six million, one hundred sixty-one thousand, seven hundred twenty-nine".