8665044457 has 2 divisors, whose sum is σ = 8665044458. Its totient is φ = 8665044456.

The previous prime is 8665044397. The next prime is 8665044461. The reversal of 8665044457 is 7544405668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6413447056 + 2251597401 = 80084^2 + 47451^2 .

It is a cyclic number.

It is not a de Polignac number, because 8665044457 - 2¹⁵ = 8665011689 is a prime.

It is a super-4 number, since 4×8665044457⁴ (a number of 41 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8665044457.

It is not a weakly prime, because it can be changed into another prime (8665084457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4332522228 + 4332522229.

It is an arithmetic number, because the mean of its divisors is an integer number (4332522229).

Almost surely, 2^8665044457 is an apocalyptic number.

It is an amenable number.

8665044457 is a deficient number, since it is larger than the sum of its proper divisors (1).

8665044457 is an equidigital number, since it uses as much as digits as its factorization.

8665044457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 49.

The square root of 8665044457 is about 93086.2205538500. The cubic root of 8665044457 is about 2053.9518816945.

The spelling of 8665044457 in words is "eight billion, six hundred sixty-five million, forty-four thousand, four hundred fifty-seven".