56556380528 has 40 divisors (see below), whose sum is σ = 110646244080. Its totient is φ = 28002723840.

The previous prime is 56556380497. The next prime is 56556380549. The reversal of 56556380528 is 82508365565.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 56556380528.

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, 5749118 + ... + 5758946.

It is an arithmetic number, because the mean of its divisors is an integer number (2766156102).

Almost surely, 2^56556380528 is an apocalyptic number.

It is an amenable number.

56556380528 is a deficient number, since it is larger than the sum of its proper divisors (54089863552).

56556380528 is a wasteful number, since it uses less digits than its factorization.

56556380528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13305 (or 13299 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 53.

The spelling of 56556380528 in words is "fifty-six billion, five hundred fifty-six million, three hundred eighty thousand, five hundred twenty-eight".