6665605571115 has 12 divisors (see below), whose sum is σ = 11553716323344. Its totient is φ = 3554989637904.

The previous prime is 6665605571113. The next prime is 6665605571129. The reversal of 6665605571115 is 5111755065666.

It is not a de Polignac number, because 6665605571115 - 2¹ = 6665605571113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6665605571111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74062284079 + ... + 74062284168.

It is an arithmetic number, because the mean of its divisors is an integer number (962809693612).

Almost surely, 2^{6665605571115} is an apocalyptic number.

6665605571115 is a deficient number, since it is larger than the sum of its proper divisors (4888110752229).

6665605571115 is a wasteful number, since it uses less digits than its factorization.

6665605571115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148124568258 (or 148124568255 counting only the distinct ones).

The product of its (nonzero) digits is 5670000, while the sum is 54.

The spelling of 6665605571115 in words is "six trillion, six hundred sixty-five billion, six hundred five million, five hundred seventy-one thousand, one hundred fifteen".