54643634645 has 4 divisors (see below), whose sum is σ = 65572361580. Its totient is φ = 43714907712.

The previous prime is 54643634579. The next prime is 54643634659.

54643634645 is nontrivially palindromic in base 10.

54643634645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9418508401 + 45225126244 = 97049^2 + 212662^2 .

It is a cyclic number.

It is not a de Polignac number, because 54643634645 - 2¹⁰ = 54643633621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54643634593 and 54643634602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5464363460 + ... + 5464363469.

It is an arithmetic number, because the mean of its divisors is an integer number (16393090395).

Almost surely, 2^54643634645 is an apocalyptic number.

It is an amenable number.

54643634645 is a deficient number, since it is larger than the sum of its proper divisors (10928726935).

54643634645 is a wasteful number, since it uses less digits than its factorization.

54643634645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928726934.

The product of its digits is 12441600, while the sum is 50.

The spelling of 54643634645 in words is "fifty-four billion, six hundred forty-three million, six hundred thirty-four thousand, six hundred forty-five".