100018000809989 has 2 divisors, whose sum is σ = 100018000809990. Its totient is φ = 100018000809988.

The previous prime is 100018000809973. The next prime is 100018000810019. The reversal of 100018000809989 is 989908000810001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100003800036100 + 14200773889 = 10000190^2 + 119167^2 .

It is a cyclic number.

It is not a de Polignac number, because 100018000809989 - 2⁴ = 100018000809973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100018000809989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100018000809929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50009000404994 + 50009000404995.

It is an arithmetic number, because the mean of its divisors is an integer number (50009000404995).

Almost surely, 2^{100018000809989} is an apocalyptic number.

It is an amenable number.

100018000809989 is a deficient number, since it is larger than the sum of its proper divisors (1).

100018000809989 is an equidigital number, since it uses as much as digits as its factorization.

100018000809989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 53.

The spelling of 100018000809989 in words is "one hundred trillion, eighteen billion, eight hundred nine thousand, nine hundred eighty-nine".