43471721560 has 32 divisors (see below), whose sum is σ = 99469198800. Its totient is φ = 17093964160.

The previous prime is 43471721551. The next prime is 43471721561. The reversal of 43471721560 is 6512717434.

43471721560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43471721561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9207751 + ... + 9212470.

Almost surely, 2^43471721560 is an apocalyptic number.

43471721560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43471721560 is an abundant number, since it is smaller than the sum of its proper divisors (55997477240).

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

43471721560 is a wasteful number, since it uses less digits than its factorization.

43471721560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18420291 (or 18420287 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 43471721560 in words is "forty-three billion, four hundred seventy-one million, seven hundred twenty-one thousand, five hundred sixty".