6015551665 has 8 divisors (see below), whose sum is σ = 7222997160. Its totient is φ = 4809551232.

The previous prime is 6015551621. The next prime is 6015551669. The reversal of 6015551665 is 5661555106.

It can be written as a sum of positive squares in 4 ways, for example, as 11316496 + 6004235169 = 3364^2 + 77487^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6015551665 - 2⁹ = 6015551153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6015551669) 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, 352084 + ... + 368773.

It is an arithmetic number, because the mean of its divisors is an integer number (902874645).

Almost surely, 2^6015551665 is an apocalyptic number.

It is an amenable number.

6015551665 is a deficient number, since it is larger than the sum of its proper divisors (1207445495).

6015551665 is a wasteful number, since it uses less digits than its factorization.

6015551665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722531.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 6015551665 is about 77559.9875257855. The cubic root of 6015551665 is about 1818.6891967407.

The spelling of 6015551665 in words is "six billion, fifteen million, five hundred fifty-one thousand, six hundred sixty-five".