8201561344 has 36 divisors (see below), whose sum is σ = 16431634240. Its totient is φ = 4085614080.

The previous prime is 8201561341. The next prime is 8201561351. The reversal of 8201561344 is 4431651028.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8201561341) 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, 10267 + ... + 128485.

Almost surely, 2^8201561344 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 8201561344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8215817120).

8201561344 is an abundant number, since it is smaller than the sum of its proper divisors (8230072896).

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

8201561344 is a wasteful number, since it uses less digits than its factorization.

8201561344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118506 (or 118492 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 8201561344 is about 90562.4720510654. The cubic root of 8201561344 is about 2016.6576547587.

The spelling of 8201561344 in words is "eight billion, two hundred one million, five hundred sixty-one thousand, three hundred forty-four".