56561730385 has 8 divisors (see below), whose sum is σ = 67878927360. Its totient is φ = 45246150384.

The previous prime is 56561730383. The next prime is 56561730427. The reversal of 56561730385 is 58303716565.

56561730385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56561730385 - 2¹ = 56561730383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56561730383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325905 + ... + 468334.

It is an arithmetic number, because the mean of its divisors is an integer number (8484865920).

Almost surely, 2^56561730385 is an apocalyptic number.

It is an amenable number.

56561730385 is a deficient number, since it is larger than the sum of its proper divisors (11317196975).

56561730385 is a wasteful number, since it uses less digits than its factorization.

56561730385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808487.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 56561730385 in words is "fifty-six billion, five hundred sixty-one million, seven hundred thirty thousand, three hundred eighty-five".