812233609881 has 16 divisors (see below), whose sum is σ = 1098424536384. Its totient is φ = 533794431744.

The previous prime is 812233609843. The next prime is 812233609927. The reversal of 812233609881 is 188906332218.

It is not a de Polignac number, because 812233609881 - 2¹¹ = 812233607833 is a prime.

It is a super-2 number, since 2×812233609881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (812233609801) 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, 3455116 + ... + 3682701.

It is an arithmetic number, because the mean of its divisors is an integer number (68651533524).

Almost surely, 2^812233609881 is an apocalyptic number.

It is an amenable number.

812233609881 is a deficient number, since it is larger than the sum of its proper divisors (286190926503).

812233609881 is a wasteful number, since it uses less digits than its factorization.

812233609881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7138360.

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 812233609881 in words is "eight hundred twelve billion, two hundred thirty-three million, six hundred nine thousand, eight hundred eighty-one".