40666423516 has 6 divisors (see below), whose sum is σ = 71166241160. Its totient is φ = 20333211756.

The previous prime is 40666423507. The next prime is 40666423517. The reversal of 40666423516 is 61532466604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666423517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5083302936 + ... + 5083302943.

Almost surely, 2^40666423516 is an apocalyptic number.

It is an amenable number.

40666423516 is a deficient number, since it is larger than the sum of its proper divisors (30499817644).

40666423516 is a wasteful number, since it uses less digits than its factorization.

40666423516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10166605883 (or 10166605881 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 40666423516 in words is "forty billion, six hundred sixty-six million, four hundred twenty-three thousand, five hundred sixteen".