8216241845 has 18 divisors (see below), whose sum is σ = 11471183766. Its totient is φ = 5633021520.

The previous prime is 8216241841. The next prime is 8216241853. The reversal of 8216241845 is 5481426128.

It can be written as a sum of positive squares in only one way, i.e., 6572993476 + 1643248369 = 81074^2 + 40537^2 .

It is not a de Polignac number, because 8216241845 - 2² = 8216241841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216241841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1415900 + ... + 1421690.

It is an arithmetic number, because the mean of its divisors is an integer number (637287987).

Almost surely, 2^8216241845 is an apocalyptic number.

It is an amenable number.

8216241845 is a deficient number, since it is larger than the sum of its proper divisors (3254941921).

8216241845 is an frugal number, since it uses more digits than its factorization.

8216241845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11601 (or 5803 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 8216241845 is about 90643.4876039090. The cubic root of 8216241845 is about 2017.8601858676.

The spelling of 8216241845 in words is "eight billion, two hundred sixteen million, two hundred forty-one thousand, eight hundred forty-five".