6559400343912 has 256 divisors, whose sum is σ = 19148677766400. Its totient is φ = 1854833541120.

The previous prime is 6559400343907. The next prime is 6559400343917. The reversal of 6559400343912 is 2193430049556.

It is an interprime number because it is at equal distance from previous prime (6559400343907) and next prime (6559400343917).

It is not an unprimeable number, because it can be changed into a prime (6559400343917) 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, 73871862 + ... + 73960602.

It is an arithmetic number, because the mean of its divisors is an integer number (74799522525).

Almost surely, 2^{6559400343912} 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 6559400343912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9574338883200).

6559400343912 is an abundant number, since it is smaller than the sum of its proper divisors (12589277422488).

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

6559400343912 is a wasteful number, since it uses less digits than its factorization.

6559400343912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89156 (or 89152 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 51.

The spelling of 6559400343912 in words is "six trillion, five hundred fifty-nine billion, four hundred million, three hundred forty-three thousand, nine hundred twelve".