56530017320 has 128 divisors (see below), whose sum is σ = 153027325440. Its totient is φ = 18374737920.

The previous prime is 56530017301. The next prime is 56530017331. The reversal of 56530017320 is 2371003565.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 688880 + ... + 766560.

It is an arithmetic number, because the mean of its divisors is an integer number (1195525980).

Almost surely, 2^56530017320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56530017320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76513662720).

56530017320 is an abundant number, since it is smaller than the sum of its proper divisors (96497308120).

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

56530017320 is a wasteful number, since it uses less digits than its factorization.

56530017320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77835 (or 77831 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 32.

The spelling of 56530017320 in words is "fifty-six billion, five hundred thirty million, seventeen thousand, three hundred twenty".