56881440000 has 2160 divisors, whose sum is σ = 278916718080. Its totient is φ = 11197440000.

The previous prime is 56881439999. The next prime is 56881440013. The reversal of 56881440000 is 4418865.

It is a tau number, because it is divible by the number of its divisors (2160).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 2993759991 + ... + 2993760009.

Almost surely, 2^56881440000 is an apocalyptic number.

56881440000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56881440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139458359040).

56881440000 is an abundant number, since it is smaller than the sum of its proper divisors (222035278080).

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

56881440000 is an equidigital number, since it uses as much as digits as its factorization.

56881440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 56881440000 its reverse (4418865), we get a palindrome (56885858865).

The spelling of 56881440000 in words is "fifty-six billion, eight hundred eighty-one million, four hundred forty thousand".