5456664666545 has 16 divisors (see below), whose sum is σ = 6555627412992. Its totient is φ = 4360247860800.

The previous prime is 5456664666529. The next prime is 5456664666581.

5456664666545 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5456664666545 - 2⁴ = 5456664666529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16377284 + ... + 16707146.

It is an arithmetic number, because the mean of its divisors is an integer number (409726713312).

Almost surely, 2^{5456664666545} is an apocalyptic number.

It is an amenable number.

5456664666545 is a deficient number, since it is larger than the sum of its proper divisors (1098962746447).

5456664666545 is a wasteful number, since it uses less digits than its factorization.

5456664666545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333712.

The product of its digits is 1866240000, while the sum is 68.

The spelling of 5456664666545 in words is "five trillion, four hundred fifty-six billion, six hundred sixty-four million, six hundred sixty-six thousand, five hundred forty-five".