812134147057 has 2 divisors, whose sum is σ = 812134147058. Its totient is φ = 812134147056.

The previous prime is 812134147051. The next prime is 812134147229. The reversal of 812134147057 is 750741431218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 700620894961 + 111513252096 = 837031^2 + 333936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812134147057 is a prime.

It is a super-2 number, since 2×812134147057² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (812134147051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406067073528 + 406067073529.

It is an arithmetic number, because the mean of its divisors is an integer number (406067073529).

Almost surely, 2^812134147057 is an apocalyptic number.

It is an amenable number.

812134147057 is a deficient number, since it is larger than the sum of its proper divisors (1).

812134147057 is an equidigital number, since it uses as much as digits as its factorization.

812134147057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 812134147057 in words is "eight hundred twelve billion, one hundred thirty-four million, one hundred forty-seven thousand, fifty-seven".