54656665645 has 4 divisors (see below), whose sum is σ = 65587998780. Its totient is φ = 43725332512.

The previous prime is 54656665639. The next prime is 54656665663.

54656665645 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25646741316 + 29009924329 = 160146^2 + 170323^2 .

It is a cyclic number.

It is not a de Polignac number, because 54656665645 - 2¹¹ = 54656663597 is a prime.

It is a super-3 number, since 3×54656665645³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54656665645.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5465666560 + ... + 5465666569.

It is an arithmetic number, because the mean of its divisors is an integer number (16396999695).

Almost surely, 2^54656665645 is an apocalyptic number.

It is an amenable number.

54656665645 is a deficient number, since it is larger than the sum of its proper divisors (10931333135).

54656665645 is a wasteful number, since it uses less digits than its factorization.

54656665645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10931333134.

The product of its digits is 77760000, while the sum is 58.

The spelling of 54656665645 in words is "fifty-four billion, six hundred fifty-six million, six hundred sixty-five thousand, six hundred forty-five".