41666721424 has 20 divisors (see below), whose sum is σ = 81443694636. Its totient is φ = 20648993792.

The previous prime is 41666721407. The next prime is 41666721433. The reversal of 41666721424 is 42412766614.

41666721424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 15867937024 + 25798784400 = 125968^2 + 160620^2 .

It is a super-2 number, since 2×41666721424² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11521069 + ... + 11524684.

Almost surely, 2^41666721424 is an apocalyptic number.

It is an amenable number.

41666721424 is a deficient number, since it is larger than the sum of its proper divisors (39776973212).

41666721424 is a wasteful number, since it uses less digits than its factorization.

41666721424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23045874 (or 23045868 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The spelling of 41666721424 in words is "forty-one billion, six hundred sixty-six million, seven hundred twenty-one thousand, four hundred twenty-four".