989011000101001 has 2 divisors, whose sum is σ = 989011000101002. Its totient is φ = 989011000101000.

The previous prime is 989011000100987. The next prime is 989011000101013. The reversal of 989011000101001 is 100101000110989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987731440958025 + 1279559142976 = 31428195^2 + 1131176^2 .

It is an emirp because it is prime and its reverse (100101000110989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989011000101001 - 2¹³ = 989011000092809 is a prime.

It is not a weakly prime, because it can be changed into another prime (989011000101401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494505500050500 + 494505500050501.

It is an arithmetic number, because the mean of its divisors is an integer number (494505500050501).

Almost surely, 2^{989011000101001} is an apocalyptic number.

It is an amenable number.

989011000101001 is a deficient number, since it is larger than the sum of its proper divisors (1).

989011000101001 is an equidigital number, since it uses as much as digits as its factorization.

989011000101001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 989011000101001 in words is "nine hundred eighty-nine trillion, eleven billion, one hundred one thousand, one".