40666803447 has 16 divisors (see below), whose sum is σ = 56586666240. Its totient is φ = 25929353472.

The previous prime is 40666803389. The next prime is 40666803461. The reversal of 40666803447 is 74430866604.

It is not a de Polignac number, because 40666803447 - 2⁷ = 40666803319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40666803396 and 40666803405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666803497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638704 + ... + 699482.

It is an arithmetic number, because the mean of its divisors is an integer number (3536666640).

Almost surely, 2^40666803447 is an apocalyptic number.

40666803447 is a deficient number, since it is larger than the sum of its proper divisors (15919862793).

40666803447 is a wasteful number, since it uses less digits than its factorization.

40666803447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70502.

The product of its (nonzero) digits is 2322432, while the sum is 48.

The spelling of 40666803447 in words is "forty billion, six hundred sixty-six million, eight hundred three thousand, four hundred forty-seven".