800809617616 has 20 divisors (see below), whose sum is σ = 1553989197924. Its totient is φ = 399780147200.

The previous prime is 800809617611. The next prime is 800809617617. The reversal of 800809617616 is 616716908008.

It is a happy number.

800809617616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 387874857616 + 412934760000 = 622796^2 + 642600^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800809617611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39030775 + ... + 39051286.

Almost surely, 2^800809617616 is an apocalyptic number.

It is an amenable number.

800809617616 is a deficient number, since it is larger than the sum of its proper divisors (753179580308).

800809617616 is a wasteful number, since it uses less digits than its factorization.

800809617616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78082710 (or 78082704 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 800809617616 in words is "eight hundred billion, eight hundred nine million, six hundred seventeen thousand, six hundred sixteen".