6666575666155 has 16 divisors (see below), whose sum is σ = 8041631019840. Its totient is φ = 5305441341312.

The previous prime is 6666575666083. The next prime is 6666575666237. The reversal of 6666575666155 is 5516665756666.

It is a cyclic number.

It is not a de Polignac number, because 6666575666155 - 2⁷ = 6666575666027 is a prime.

It is a super-2 number, since 2×6666575666155² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6578917 + ... + 7524313.

It is an arithmetic number, because the mean of its divisors is an integer number (502601938740).

Almost surely, 2^{6666575666155} is an apocalyptic number.

6666575666155 is a deficient number, since it is larger than the sum of its proper divisors (1375055353685).

6666575666155 is a wasteful number, since it uses less digits than its factorization.

6666575666155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952758.

The product of its digits is 1224720000, while the sum is 70.

The spelling of 6666575666155 in words is "six trillion, six hundred sixty-six billion, five hundred seventy-five million, six hundred sixty-six thousand, one hundred fifty-five".