40671186866 has 8 divisors (see below), whose sum is σ = 61009649580. Its totient is φ = 20334637008.

The previous prime is 40671186863. The next prime is 40671186883. The reversal of 40671186866 is 66868117604.

It can be written as a sum of positive squares in 2 ways, for example, as 40654253641 + 16933225 = 201629^2 + 4115^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40671186863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423821 + ... + 510848.

Almost surely, 2^40671186866 is an apocalyptic number.

40671186866 is a deficient number, since it is larger than the sum of its proper divisors (20338462714).

40671186866 is a wasteful number, since it uses less digits than its factorization.

40671186866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956428.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 40671186866 in words is "forty billion, six hundred seventy-one million, one hundred eighty-six thousand, eight hundred sixty-six".