8815241561 has 24 divisors (see below), whose sum is σ = 10619225856. Its totient is φ = 7288716960.

The previous prime is 8815241549. The next prime is 8815241581. The reversal of 8815241561 is 1651425188.

It is not a de Polignac number, because 8815241561 - 2⁶ = 8815241497 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8815241521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 472370 + ... + 490676.

It is an arithmetic number, because the mean of its divisors is an integer number (442467744).

Almost surely, 2^8815241561 is an apocalyptic number.

It is an amenable number.

8815241561 is a deficient number, since it is larger than the sum of its proper divisors (1803984295).

8815241561 is a wasteful number, since it uses less digits than its factorization.

8815241561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18669 (or 18662 counting only the distinct ones).

The product of its digits is 76800, while the sum is 41.

The square root of 8815241561 is about 93889.5178441129. The cubic root of 8815241561 is about 2065.7514798213.

The spelling of 8815241561 in words is "eight billion, eight hundred fifteen million, two hundred forty-one thousand, five hundred sixty-one".