43216684056 has 576 divisors, whose sum is σ = 155538727200. Its totient is φ = 11072775168.

The previous prime is 43216683997. The next prime is 43216684081. The reversal of 43216684056 is 65048661234.

43216684056 is a `hidden beast` number, since 432 + 166 + 8 + 4 + 0 + 56 = 666.

It is a super-2 number, since 2×43216684056² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 66181426 + ... + 66182078.

Almost surely, 2^43216684056 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 43216684056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77769363600).

43216684056 is an abundant number, since it is smaller than the sum of its proper divisors (112322043144).

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

43216684056 is a wasteful number, since it uses less digits than its factorization.

43216684056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 43216684056 in words is "forty-three billion, two hundred sixteen million, six hundred eighty-four thousand, fifty-six".