812098989450 has 288 divisors, whose sum is σ = 2604796032384. Its totient is φ = 184265072640.

The previous prime is 812098989431. The next prime is 812098989467. The reversal of 812098989450 is 54989890218.

812098989450 is a `hidden beast` number, since 8 + 1 + 2 + 0 + 98 + 98 + 9 + 450 = 666.

It is a super-2 number, since 2×812098989450² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11617002 + ... + 11686698.

It is an arithmetic number, because the mean of its divisors is an integer number (9044430668).

Almost surely, 2^812098989450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812098989450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302398016192).

812098989450 is an abundant number, since it is smaller than the sum of its proper divisors (1792697042934).

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

812098989450 is a wasteful number, since it uses less digits than its factorization.

812098989450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69868 (or 69851 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 812098989450 in words is "eight hundred twelve billion, ninety-eight million, nine hundred eighty-nine thousand, four hundred fifty".