56345557320 has 192 divisors, whose sum is σ = 205784167680. Its totient is φ = 13266620928.

The previous prime is 56345557291. The next prime is 56345557381. The reversal of 56345557320 is 2375554365.

56345557320 is a `hidden beast` number, since 5 + 6 + 3 + 4 + 55 + 573 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 154092 + ... + 369371.

It is an arithmetic number, because the mean of its divisors is an integer number (1071792540).

Almost surely, 2^56345557320 is an apocalyptic number.

It is an amenable number.

56345557320 is an abundant number, since it is smaller than the sum of its proper divisors (149438610360).

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

56345557320 is a wasteful number, since it uses less digits than its factorization.

56345557320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523516 (or 523509 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 45.

The spelling of 56345557320 in words is "fifty-six billion, three hundred forty-five million, five hundred fifty-seven thousand, three hundred twenty".