43159261680 has 240 divisors, whose sum is σ = 150751931616. Its totient is φ = 11056711680.

The previous prime is 43159261669. The next prime is 43159261709. The reversal of 43159261680 is 8616295134.

43159261680 is a `hidden beast` number, since 43 + 1 + 592 + 6 + 16 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1877134 + ... + 1899986.

Almost surely, 2^43159261680 is an apocalyptic number.

43159261680 is a gapful number since it is divisible by the number (40) 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 43159261680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75375965808).

43159261680 is an abundant number, since it is smaller than the sum of its proper divisors (107592669936).

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

43159261680 is a wasteful number, since it uses less digits than its factorization.

43159261680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22976 (or 22967 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 43159261680 in words is "forty-three billion, one hundred fifty-nine million, two hundred sixty-one thousand, six hundred eighty".