812518133071 has 2 divisors, whose sum is σ = 812518133072. Its totient is φ = 812518133070.

The previous prime is 812518133069. The next prime is 812518133123. The reversal of 812518133071 is 170331815218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 812518133071 - 2¹ = 812518133069 is a prime.

Together with 812518133069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812518139071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406259066535 + 406259066536.

It is an arithmetic number, because the mean of its divisors is an integer number (406259066536).

Almost surely, 2^812518133071 is an apocalyptic number.

812518133071 is a deficient number, since it is larger than the sum of its proper divisors (1).

812518133071 is an equidigital number, since it uses as much as digits as its factorization.

812518133071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 40.

Adding to 812518133071 its reverse (170331815218), we get a palindrome (982849948289).

The spelling of 812518133071 in words is "eight hundred twelve billion, five hundred eighteen million, one hundred thirty-three thousand, seventy-one".