6615665115 has 8 divisors (see below), whose sum is σ = 10585064208. Its totient is φ = 3528354720.

The previous prime is 6615665047. The next prime is 6615665123. The reversal of 6615665115 is 5115665166.

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

It is not a de Polignac number, because 6615665115 - 2¹³ = 6615656923 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220522156 + ... + 220522185.

It is an arithmetic number, because the mean of its divisors is an integer number (1323133026).

Almost surely, 2^6615665115 is an apocalyptic number.

6615665115 is a deficient number, since it is larger than the sum of its proper divisors (3969399093).

6615665115 is a wasteful number, since it uses less digits than its factorization.

6615665115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441044349.

The product of its digits is 162000, while the sum is 42.

The square root of 6615665115 is about 81336.7390236417. The cubic root of 6615665115 is about 1877.2603367953.

The spelling of 6615665115 in words is "six billion, six hundred fifteen million, six hundred sixty-five thousand, one hundred fifteen".