812518133327 has 16 divisors (see below), whose sum is σ = 835922307360. Its totient is φ = 789291993600.

The previous prime is 812518133299. The next prime is 812518133419. The reversal of 812518133327 is 723331815218.

It is a cyclic number.

It is not a de Polignac number, because 812518133327 - 2⁸ = 812518133071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812515133327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9027248 + ... + 9116810.

It is an arithmetic number, because the mean of its divisors is an integer number (52245144210).

Almost surely, 2^812518133327 is an apocalyptic number.

812518133327 is a deficient number, since it is larger than the sum of its proper divisors (23404174033).

812518133327 is a wasteful number, since it uses less digits than its factorization.

812518133327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90554.

The product of its digits is 241920, while the sum is 44.

The spelling of 812518133327 in words is "eight hundred twelve billion, five hundred eighteen million, one hundred thirty-three thousand, three hundred twenty-seven".