8665555442 has 8 divisors (see below), whose sum is σ = 13003300332. Its totient is φ = 4331122000.

The previous prime is 8665555441. The next prime is 8665555499. The reversal of 8665555442 is 2445555668.

It can be written as a sum of positive squares in 2 ways, for example, as 7742064121 + 923491321 = 87989^2 + 30389^2 .

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

It is a super-2 number, since 2×8665555442² (a number of 21 digits) contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (8665555441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821309 + ... + 831792.

Almost surely, 2^8665555442 is an apocalyptic number.

8665555442 is a deficient number, since it is larger than the sum of its proper divisors (4337744890).

8665555442 is a wasteful number, since it uses less digits than its factorization.

8665555442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655724.

The product of its digits is 5760000, while the sum is 50.

The square root of 8665555442 is about 93088.9651999634. The cubic root of 8665555442 is about 2053.9922553274.

The spelling of 8665555442 in words is "eight billion, six hundred sixty-five million, five hundred fifty-five thousand, four hundred forty-two".