56173436646 has 16 divisors (see below), whose sum is σ = 112364678064. Its totient is φ = 18721511424.

The previous prime is 56173436629. The next prime is 56173436689. The reversal of 56173436646 is 64663437165.

56173436646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700675 + ... + 776718.

It is an arithmetic number, because the mean of its divisors is an integer number (7022792379).

Almost surely, 2^56173436646 is an apocalyptic number.

56173436646 is an abundant number, since it is smaller than the sum of its proper divisors (56191241418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56173436646 is a wasteful number, since it uses less digits than its factorization.

56173436646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483735.

The product of its digits is 6531840, while the sum is 51.

The spelling of 56173436646 in words is "fifty-six billion, one hundred seventy-three million, four hundred thirty-six thousand, six hundred forty-six".