812560092100 has 18 divisors (see below), whose sum is σ = 1763255400074. Its totient is φ = 325024036800.

The previous prime is 812560092089. The next prime is 812560092101. The reversal of 812560092100 is 1290065218.

It can be written as a sum of positive squares in 3 ways, for example, as 30382581636 + 782177510464 = 174306^2 + 884408^2 .

It is not an unprimeable number, because it can be changed into a prime (812560092101) 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 5 ways as a sum of consecutive naturals, for example, 4062800361 + ... + 4062800560.

Almost surely, 2^812560092100 is an apocalyptic number.

It is an amenable number.

812560092100 is an abundant number, since it is smaller than the sum of its proper divisors (950695307974).

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

812560092100 is a wasteful number, since it uses less digits than its factorization.

812560092100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8125600935 (or 8125600928 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 812560092100 in words is "eight hundred twelve billion, five hundred sixty million, ninety-two thousand, one hundred".