43606245721 has 8 divisors (see below), whose sum is σ = 45737936640. Its totient is φ = 41494202112.

The previous prime is 43606245701. The next prime is 43606245731. The reversal of 43606245721 is 12754260634.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43606245721 - 2⁹ = 43606245209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43606245701) 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, 4907281 + ... + 4916158.

It is an arithmetic number, because the mean of its divisors is an integer number (5717242080).

Almost surely, 2^43606245721 is an apocalyptic number.

It is an amenable number.

43606245721 is a deficient number, since it is larger than the sum of its proper divisors (2131690919).

43606245721 is a wasteful number, since it uses less digits than its factorization.

43606245721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9823655.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 43606245721 in words is "forty-three billion, six hundred six million, two hundred forty-five thousand, seven hundred twenty-one".