812690118851 has 4 divisors (see below), whose sum is σ = 875204743392. Its totient is φ = 750175494312.

The previous prime is 812690118847. The next prime is 812690118881. The reversal of 812690118851 is 158811096218.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 812690118851 - 2² = 812690118847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 812690118851.

It is not an unprimeable number, because it can be changed into a prime (812690118811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31257312251 + ... + 31257312276.

It is an arithmetic number, because the mean of its divisors is an integer number (218801185848).

Almost surely, 2^812690118851 is an apocalyptic number.

812690118851 is a deficient number, since it is larger than the sum of its proper divisors (62514624541).

812690118851 is a wasteful number, since it uses less digits than its factorization.

812690118851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62514624540.

The product of its (nonzero) digits is 276480, while the sum is 50.

The spelling of 812690118851 in words is "eight hundred twelve billion, six hundred ninety million, one hundred eighteen thousand, eight hundred fifty-one".