43661613160 has 128 divisors (see below), whose sum is σ = 113011200000. Its totient is φ = 15014488320.

The previous prime is 43661613157. The next prime is 43661613169. The reversal of 43661613160 is 6131616634.

It is not an unprimeable number, because it can be changed into a prime (43661613169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5003281 + ... + 5011999.

It is an arithmetic number, because the mean of its divisors is an integer number (882900000).

Almost surely, 2^43661613160 is an apocalyptic number.

43661613160 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 43661613160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56505600000).

43661613160 is an abundant number, since it is smaller than the sum of its proper divisors (69349586840).

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

43661613160 is a wasteful number, since it uses less digits than its factorization.

43661613160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9359 (or 9355 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 43661613160 in words is "forty-three billion, six hundred sixty-one million, six hundred thirteen thousand, one hundred sixty".