54693439645 has 8 divisors (see below), whose sum is σ = 70680752856. Its totient is φ = 40389001536.

The previous prime is 54693439597. The next prime is 54693439657.

54693439645 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 12213344196 + 42480095449 = 110514^2 + 206107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54693439645 - 2¹⁹ = 54692915357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54693439645.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 420718702 + ... + 420718831.

It is an arithmetic number, because the mean of its divisors is an integer number (8835094107).

Almost surely, 2^54693439645 is an apocalyptic number.

It is an amenable number.

54693439645 is a deficient number, since it is larger than the sum of its proper divisors (15987313211).

54693439645 is a wasteful number, since it uses less digits than its factorization.

54693439645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841437551.

The product of its digits is 41990400, while the sum is 58.

The spelling of 54693439645 in words is "fifty-four billion, six hundred ninety-three million, four hundred thirty-nine thousand, six hundred forty-five".