8447117061 has 4 divisors (see below), whose sum is σ = 11262822752. Its totient is φ = 5631411372.

The previous prime is 8447117059. The next prime is 8447117087. The reversal of 8447117061 is 1607117448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8447117061 - 2¹ = 8447117059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8447117561) 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, 1407852841 + ... + 1407852846.

It is an arithmetic number, because the mean of its divisors is an integer number (2815705688).

Almost surely, 2^8447117061 is an apocalyptic number.

It is an amenable number.

8447117061 is a deficient number, since it is larger than the sum of its proper divisors (2815705691).

8447117061 is a wasteful number, since it uses less digits than its factorization.

8447117061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815705690.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 8447117061 is about 91908.1990956193. The cubic root of 8447117061 is about 2036.5863919431.

The spelling of 8447117061 in words is "eight billion, four hundred forty-seven million, one hundred seventeen thousand, sixty-one".