10108920890989 has 2 divisors, whose sum is σ = 10108920890990. Its totient is φ = 10108920890988.

The previous prime is 10108920890983. The next prime is 10108920891037. The reversal of 10108920890989 is 98909802980101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9094247454889 + 1014673436100 = 3015667^2 + 1007310^2 .

It is a cyclic number.

It is not a de Polignac number, because 10108920890989 - 2¹⁵ = 10108920858221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10108920890989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10108920890983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5054460445494 + 5054460445495.

It is an arithmetic number, because the mean of its divisors is an integer number (5054460445495).

Almost surely, 2^{10108920890989} is an apocalyptic number.

It is an amenable number.

10108920890989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10108920890989 is an equidigital number, since it uses as much as digits as its factorization.

10108920890989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 64.

The spelling of 10108920890989 in words is "ten trillion, one hundred eight billion, nine hundred twenty million, eight hundred ninety thousand, nine hundred eighty-nine".