39966806903 has 2 divisors, whose sum is σ = 39966806904. Its totient is φ = 39966806902.

The previous prime is 39966806881. The next prime is 39966806921. The reversal of 39966806903 is 30960866993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39966806903 - 2¹⁴ = 39966790519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39966806923) 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, 19983403451 + 19983403452.

It is an arithmetic number, because the mean of its divisors is an integer number (19983403452).

Almost surely, 2^39966806903 is an apocalyptic number.

39966806903 is a deficient number, since it is larger than the sum of its proper divisors (1).

39966806903 is an equidigital number, since it uses as much as digits as its factorization.

39966806903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11337408, while the sum is 59.

The spelling of 39966806903 in words is "thirty-nine billion, nine hundred sixty-six million, eight hundred six thousand, nine hundred three".