56439994000000 has 896 divisors, whose sum is σ = 163091131156800. Its totient is φ = 19276185600000.

The previous prime is 56439993999997. The next prime is 56439994000067. The reversal of 56439994000000 is 49993465.

It is a junction number, because it is equal to n+sod(n) for n = 56439993999899 and 56439993999908.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 21241998672 + ... + 21242001328.

Almost surely, 2^{56439994000000} is an apocalyptic number.

56439994000000 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 56439994000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81545565578400).

56439994000000 is an abundant number, since it is smaller than the sum of its proper divisors (106651137156800).

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

56439994000000 is an equidigital number, since it uses as much as digits as its factorization.

56439994000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2739 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 56439994000000 in words is "fifty-six trillion, four hundred thirty-nine billion, nine hundred ninety-four million", and thus it is an aban number.