56173395563 has 8 divisors (see below), whose sum is σ = 58224824832. Its totient is φ = 54157643496.

The previous prime is 56173395529. The next prime is 56173395571. The reversal of 56173395563 is 36559337165.

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

It is a cyclic number.

It is not a de Polignac number, because 56173395563 - 2¹⁰ = 56173394539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56173395463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8916095 + ... + 8922392.

It is an arithmetic number, because the mean of its divisors is an integer number (7278103104).

Almost surely, 2^56173395563 is an apocalyptic number.

56173395563 is a deficient number, since it is larger than the sum of its proper divisors (2051429269).

56173395563 is a wasteful number, since it uses less digits than its factorization.

56173395563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17838601.

The product of its digits is 7654500, while the sum is 53.

The spelling of 56173395563 in words is "fifty-six billion, one hundred seventy-three million, three hundred ninety-five thousand, five hundred sixty-three".