4556665666555 has 8 divisors (see below), whose sum is σ = 5656550482800. Its totient is φ = 3519631411296.

The previous prime is 4556665666529. The next prime is 4556665666571. The reversal of 4556665666555 is 5556665666554.

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 4556665666555 - 2⁵ = 4556665666523 is a prime.

It is a super-2 number, since 2×4556665666555² (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 7 ways as a sum of consecutive naturals, for example, 15712640085 + ... + 15712640374.

It is an arithmetic number, because the mean of its divisors is an integer number (707068810350).

Almost surely, 2^{4556665666555} is an apocalyptic number.

4556665666555 is a deficient number, since it is larger than the sum of its proper divisors (1099884816245).

4556665666555 is a wasteful number, since it uses less digits than its factorization.

4556665666555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31425280493.

The product of its digits is 2916000000, while the sum is 70.

Subtracting 4556665666555 from its reverse (5556665666554), we obtain a palindrome (999999999999).

The spelling of 4556665666555 in words is "four trillion, five hundred fifty-six billion, six hundred sixty-five million, six hundred sixty-six thousand, five hundred fifty-five".