10166663989 has 2 divisors, whose sum is σ = 10166663990. Its totient is φ = 10166663988.

The previous prime is 10166663959. The next prime is 10166664029. The reversal of 10166663989 is 98936666101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9036023364 + 1130640625 = 95058^2 + 33625^2 .

It is a cyclic number.

It is not a de Polignac number, because 10166663989 - 2⁷ = 10166663861 is a prime.

It is a super-2 number, since 2×10166663989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10166663959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5083331994 + 5083331995.

It is an arithmetic number, because the mean of its divisors is an integer number (5083331995).

Almost surely, 2^10166663989 is an apocalyptic number.

It is an amenable number.

10166663989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10166663989 is an equidigital number, since it uses as much as digits as its factorization.

10166663989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 10166663989 in words is "ten billion, one hundred sixty-six million, six hundred sixty-three thousand, nine hundred eighty-nine".