8081240844 has 12 divisors (see below), whose sum is σ = 18856228664. Its totient is φ = 2693746944.

The previous prime is 8081240807. The next prime is 8081240857. The reversal of 8081240844 is 4480421808.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336718357 + ... + 336718380.

Almost surely, 2^8081240844 is an apocalyptic number.

It is an amenable number.

8081240844 is an abundant number, since it is smaller than the sum of its proper divisors (10774987820).

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

8081240844 is a wasteful number, since it uses less digits than its factorization.

8081240844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673436744 (or 673436742 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 39.

The square root of 8081240844 is about 89895.7220561691. The cubic root of 8081240844 is about 2006.7472818293.

The spelling of 8081240844 in words is "eight billion, eighty-one million, two hundred forty thousand, eight hundred forty-four".