40660010866 has 4 divisors (see below), whose sum is σ = 60990016302. Its totient is φ = 20330005432.

The previous prime is 40660010851. The next prime is 40660010891. The reversal of 40660010866 is 66801006604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33472532025 + 7187478841 = 182955^2 + 84779^2 .

It is an unprimeable number.

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, 10165002715 + ... + 10165002718.

Almost surely, 2^40660010866 is an apocalyptic number.

40660010866 is a deficient number, since it is larger than the sum of its proper divisors (20330005436).

40660010866 is a wasteful number, since it uses less digits than its factorization.

40660010866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20330005435.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 40660010866 in words is "forty billion, six hundred sixty million, ten thousand, eight hundred sixty-six".