2043643348656 has 240 divisors, whose sum is σ = 7138363115520. Its totient is φ = 531391311360.

The previous prime is 2043643348639. The next prime is 2043643348657. The reversal of 2043643348656 is 6568433463402.

2043643348656 is a `hidden beast` number, since 20 + 4 + 3 + 64 + 33 + 486 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (2043643348657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 167896 + ... + 2028663.

It is an arithmetic number, because the mean of its divisors is an integer number (29743179648).

Almost surely, 2^{2043643348656} is an apocalyptic number.

2043643348656 is a gapful number since it is divisible by the number (26) 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 2043643348656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3569181557760).

2043643348656 is an abundant number, since it is smaller than the sum of its proper divisors (5094719766864).

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

2043643348656 is a wasteful number, since it uses less digits than its factorization.

2043643348656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196664 (or 2196655 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 54.

The spelling of 2043643348656 in words is "two trillion, forty-three billion, six hundred forty-three million, three hundred forty-eight thousand, six hundred fifty-six".