56173436647 has 8 divisors (see below), whose sum is σ = 56386126800. Its totient is φ = 55960847040.

The previous prime is 56173436629. The next prime is 56173436689. The reversal of 56173436647 is 74663437165.

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 56173436647 - 2²⁷ = 56039218919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56173436594 and 56173436603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56173436747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207947 + ... + 1253587.

It is an arithmetic number, because the mean of its divisors is an integer number (7048265850).

Almost surely, 2^56173436647 is an apocalyptic number.

56173436647 is a deficient number, since it is larger than the sum of its proper divisors (212690153).

56173436647 is a wasteful number, since it uses less digits than its factorization.

56173436647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50273.

The product of its digits is 7620480, while the sum is 52.

The spelling of 56173436647 in words is "fifty-six billion, one hundred seventy-three million, four hundred thirty-six thousand, six hundred forty-seven".