56813861894340 has 96 divisors (see below), whose sum is σ = 162533787623424. Its totient is φ = 14821597042560.

The previous prime is 56813861894323. The next prime is 56813861894341. The reversal of 56813861894340 is 4349816831865.

It is not an unprimeable number, because it can be changed into a prime (56813861894341) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2158137 + ... + 10875903.

It is an arithmetic number, because the mean of its divisors is an integer number (1693060287744).

Almost surely, 2^{56813861894340} 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 56813861894340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81266893811712).

56813861894340 is an abundant number, since it is smaller than the sum of its proper divisors (105719925729084).

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

56813861894340 is a wasteful number, since it uses less digits than its factorization.

56813861894340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8720137 (or 8720135 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 66.

The spelling of 56813861894340 in words is "fifty-six trillion, eight hundred thirteen billion, eight hundred sixty-one million, eight hundred ninety-four thousand, three hundred forty".