56561366004000 has 384 divisors, whose sum is σ = 217689278526720. Its totient is φ = 12657088512000.

The previous prime is 56561366003981. The next prime is 56561366004007. The reversal of 56561366004000 is 40066316565.

It is not an unprimeable number, because it can be changed into a prime (56561366004007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14764585 + ... + 18196584.

It is an arithmetic number, because the mean of its divisors is an integer number (566899162830).

Almost surely, 2^{56561366004000} is an apocalyptic number.

56561366004000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56561366004000 is an abundant number, since it is smaller than the sum of its proper divisors (161127912522720).

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

56561366004000 is a wasteful number, since it uses less digits than its factorization.

56561366004000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32961221 (or 32961203 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 56561366004000 in words is "fifty-six trillion, five hundred sixty-one billion, three hundred sixty-six million, four thousand".