4381363561 has 8 divisors (see below), whose sum is σ = 4505756544. Its totient is φ = 4258516080.

The previous prime is 4381363543. The next prime is 4381363627. The reversal of 4381363561 is 1653631834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4381363561 - 2¹¹ = 4381361513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4381363531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380625 + ... + 391966.

It is an arithmetic number, because the mean of its divisors is an integer number (563219568).

Almost surely, 2^4381363561 is an apocalyptic number.

It is an amenable number.

4381363561 is a deficient number, since it is larger than the sum of its proper divisors (124392983).

4381363561 is a wasteful number, since it uses less digits than its factorization.

4381363561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772751.

The product of its digits is 155520, while the sum is 40.

The square root of 4381363561 is about 66191.8692967648. The cubic root of 4381363561 is about 1636.3257473168.

The spelling of 4381363561 in words is "four billion, three hundred eighty-one million, three hundred sixty-three thousand, five hundred sixty-one".