812054557868 has 12 divisors (see below), whose sum is σ = 1495889975160. Its totient is φ = 384657422112.

The previous prime is 812054557859. The next prime is 812054557877. The reversal of 812054557868 is 868755450218.

It is an interprime number because it is at equal distance from previous prime (812054557859) and next prime (812054557877).

It is an unprimeable number.

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, 5342464121 + ... + 5342464272.

It is an arithmetic number, because the mean of its divisors is an integer number (124657497930).

Almost surely, 2^812054557868 is an apocalyptic number.

It is an amenable number.

812054557868 is a deficient number, since it is larger than the sum of its proper divisors (683835417292).

812054557868 is a wasteful number, since it uses less digits than its factorization.

812054557868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10684928416 (or 10684928414 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 59.

The spelling of 812054557868 in words is "eight hundred twelve billion, fifty-four million, five hundred fifty-seven thousand, eight hundred sixty-eight".