812755404660 has 48 divisors (see below), whose sum is σ = 2278467043776. Its totient is φ = 216472687872.

The previous prime is 812755404641. The next prime is 812755404679. The reversal of 812755404660 is 66404557218.

It is an interprime number because it is at equal distance from previous prime (812755404641) and next prime (812755404679).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8140177 + ... + 8239416.

It is an arithmetic number, because the mean of its divisors is an integer number (47468063412).

Almost surely, 2^812755404660 is an apocalyptic number.

It is an amenable number.

812755404660 is an abundant number, since it is smaller than the sum of its proper divisors (1465711639116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812755404660 is a wasteful number, since it uses less digits than its factorization.

812755404660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16380432 (or 16380430 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 812755404660 in words is "eight hundred twelve billion, seven hundred fifty-five million, four hundred four thousand, six hundred sixty".