812545335100 has 36 divisors (see below), whose sum is σ = 1765923708024. Its totient is φ = 324520377280.

The previous prime is 812545335079. The next prime is 812545335101. The reversal of 812545335100 is 1533545218.

It is a self number, because there is not a number n which added to its sum of digits gives 812545335100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812545335101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6156334 + ... + 6286933.

It is an arithmetic number, because the mean of its divisors is an integer number (49053436334).

Almost surely, 2^812545335100 is an apocalyptic number.

It is an amenable number.

812545335100 is an abundant number, since it is smaller than the sum of its proper divisors (953378372924).

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

812545335100 is a wasteful number, since it uses less digits than its factorization.

812545335100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12443934 (or 12443927 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 812545335100 in words is "eight hundred twelve billion, five hundred forty-five million, three hundred thirty-five thousand, one hundred".