812001802248 has 540 divisors, whose sum is σ = 2872232855415. Its totient is φ = 213603796224.

The previous prime is 812001802223. The next prime is 812001802253. The reversal of 812001802248 is 842208100218.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 11016181764 + 800985620484 = 104958^2 + 894978^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=637182.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 2087408038 + ... + 2087408426.

Almost surely, 2^812001802248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812001802248

812001802248 is an abundant number, since it is smaller than the sum of its proper divisors (2060231053167).

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

812001802248 is a wasteful number, since it uses less digits than its factorization.

812001802248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The spelling of 812001802248 in words is "eight hundred twelve billion, one million, eight hundred two thousand, two hundred forty-eight".