43640720160 has 96 divisors (see below), whose sum is σ = 137700984960. Its totient is φ = 11617824768.

The previous prime is 43640720117. The next prime is 43640720183. The reversal of 43640720160 is 6102704634.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207981 + ... + 361299.

It is an arithmetic number, because the mean of its divisors is an integer number (1434385260).

Almost surely, 2^43640720160 is an apocalyptic number.

43640720160 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 43640720160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68850492480).

43640720160 is an abundant number, since it is smaller than the sum of its proper divisors (94060264800).

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

43640720160 is a wasteful number, since it uses less digits than its factorization.

43640720160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153930 (or 153922 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 43640720160 in words is "forty-three billion, six hundred forty million, seven hundred twenty thousand, one hundred sixty".