545659666956544 has 144 divisors (see below), whose sum is σ = 1323919197877248. Its totient is φ = 219111027572736.

The previous prime is 545659666956479. The next prime is 545659666956587. The reversal of 545659666956544 is 445659666956545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33367117 + ... + 46954060.

It is an arithmetic number, because the mean of its divisors is an integer number (9193883318592).

Almost surely, 2^{545659666956544} is an apocalyptic number.

It is an amenable number.

545659666956544 is an abundant number, since it is smaller than the sum of its proper divisors (778259530920704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545659666956544 is a wasteful number, since it uses less digits than its factorization.

545659666956544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80321440 (or 80321426 counting only the distinct ones).

The product of its digits is 125971200000, while the sum is 85.

Subtracting from 545659666956544 its reverse (445659666956545), we obtain a palindrome (99999999999999).

The spelling of 545659666956544 in words is "five hundred forty-five trillion, six hundred fifty-nine billion, six hundred sixty-six million, nine hundred fifty-six thousand, five hundred forty-four".