40168666603 has 4 divisors (see below), whose sum is σ = 43258564048. Its totient is φ = 37078769160.

The previous prime is 40168666589. The next prime is 40168666651. The reversal of 40168666603 is 30666686104.

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

It is a cyclic number.

It is not a de Polignac number, because 40168666603 - 2²⁹ = 39631795691 is a prime.

It is a super-2 number, since 2×40168666603² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40168666003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544948703 + ... + 1544948728.

It is an arithmetic number, because the mean of its divisors is an integer number (10814641012).

Almost surely, 2^40168666603 is an apocalyptic number.

40168666603 is a deficient number, since it is larger than the sum of its proper divisors (3089897445).

40168666603 is a wasteful number, since it uses less digits than its factorization.

40168666603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089897444.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 40168666603 in words is "forty billion, one hundred sixty-eight million, six hundred sixty-six thousand, six hundred three".