812228654882 has 6 divisors (see below), whose sum is σ = 1218344894139. Its totient is φ = 406113690170.

The previous prime is 812228654869. The next prime is 812228654927. The reversal of 812228654882 is 288456822218.

It can be written as a sum of positive squares in only one way, i.e., 406114327441 + 406114327441 = 637271^2 + 637271^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=637271.

It is a super-2 number, since 2×812228654882² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 955907 + ... + 1593177.

Almost surely, 2^812228654882 is an apocalyptic number.

812228654882 is a deficient number, since it is larger than the sum of its proper divisors (406116239257).

812228654882 is an frugal number, since it uses more digits than its factorization.

812228654882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274544 (or 637273 counting only the distinct ones).

The product of its digits is 7864320, while the sum is 56.

The spelling of 812228654882 in words is "eight hundred twelve billion, two hundred twenty-eight million, six hundred fifty-four thousand, eight hundred eighty-two".