56865444440860 has 144 divisors (see below), whose sum is σ = 139089993200928. Its totient is φ = 19363174297600.

The previous prime is 56865444440839. The next prime is 56865444440957. The reversal of 56865444440860 is 6804444456865.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 56865444440792 and 56865444440801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10255230 + ... + 14795290.

It is an arithmetic number, because the mean of its divisors is an integer number (965902730562).

Almost surely, 2^{56865444440860} 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 56865444440860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69544996600464).

56865444440860 is an abundant number, since it is smaller than the sum of its proper divisors (82224548760068).

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

56865444440860 is a wasteful number, since it uses less digits than its factorization.

56865444440860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540312 (or 4540293 counting only the distinct ones).

The product of its (nonzero) digits is 353894400, while the sum is 64.

The spelling of 56865444440860 in words is "fifty-six trillion, eight hundred sixty-five billion, four hundred forty-four million, four hundred forty thousand, eight hundred sixty".