273343503645 has 24 divisors (see below), whose sum is σ = 473852340000. Its totient is φ = 145765683936.

The previous prime is 273343503577. The next prime is 273343503647. The reversal of 273343503645 is 546305343372.

273343503645 is a `hidden beast` number, since 2 + 73 + 34 + 3 + 503 + 6 + 45 = 666.

It is not a de Polignac number, because 273343503645 - 2¹¹ = 273343501597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 273343503645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273343503647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18106 + ... + 739604.

It is an arithmetic number, because the mean of its divisors is an integer number (19743847500).

Almost surely, 2^273343503645 is an apocalyptic number.

It is an amenable number.

273343503645 is a deficient number, since it is larger than the sum of its proper divisors (200508836355).

273343503645 is a wasteful number, since it uses less digits than its factorization.

273343503645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729929 (or 729926 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 45.

The spelling of 273343503645 in words is "two hundred seventy-three billion, three hundred forty-three million, five hundred three thousand, six hundred forty-five".