812449245372 has 24 divisors (see below), whose sum is σ = 1897571658192. Its totient is φ = 270551164800.

The previous prime is 812449245367. The next prime is 812449245383. The reversal of 812449245372 is 273542944218.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33143529 + ... + 33168032.

It is an arithmetic number, because the mean of its divisors is an integer number (79065485758).

Almost surely, 2^812449245372 is an apocalyptic number.

It is an amenable number.

812449245372 is an abundant number, since it is smaller than the sum of its proper divisors (1085122412820).

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

812449245372 is a wasteful number, since it uses less digits than its factorization.

812449245372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66312589 (or 66312587 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The spelling of 812449245372 in words is "eight hundred twelve billion, four hundred forty-nine million, two hundred forty-five thousand, three hundred seventy-two".