8621943265 has 8 divisors (see below), whose sum is σ = 11142203688. Its totient is φ = 6366973440.

The previous prime is 8621943251. The next prime is 8621943269. The reversal of 8621943265 is 5623491268.

It can be written as a sum of positive squares in 4 ways, for example, as 991746064 + 7630197201 = 31492^2 + 87351^2 .

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

It is not a de Polignac number, because 8621943265 - 2⁹ = 8621942753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8621943269) 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, 66322576 + ... + 66322705.

It is an arithmetic number, because the mean of its divisors is an integer number (1392775461).

Almost surely, 2^8621943265 is an apocalyptic number.

It is an amenable number.

8621943265 is a deficient number, since it is larger than the sum of its proper divisors (2520260423).

8621943265 is a wasteful number, since it uses less digits than its factorization.

8621943265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132645299.

The product of its digits is 622080, while the sum is 46.

The square root of 8621943265 is about 92854.4197386425. The cubic root of 8621943265 is about 2050.5406676236.

The spelling of 8621943265 in words is "eight billion, six hundred twenty-one million, nine hundred forty-three thousand, two hundred sixty-five".