990413204101 has 2 divisors, whose sum is σ = 990413204102. Its totient is φ = 990413204100.

The previous prime is 990413204093. The next prime is 990413204119. The reversal of 990413204101 is 101402314099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 775502151876 + 214911052225 = 880626^2 + 463585^2 .

It is an emirp because it is prime and its reverse (101402314099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990413204101 - 2³ = 990413204093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990413204141) 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, 495206602050 + 495206602051.

It is an arithmetic number, because the mean of its divisors is an integer number (495206602051).

Almost surely, 2^990413204101 is an apocalyptic number.

It is an amenable number.

990413204101 is a deficient number, since it is larger than the sum of its proper divisors (1).

990413204101 is an equidigital number, since it uses as much as digits as its factorization.

990413204101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 990413204101 in words is "nine hundred ninety billion, four hundred thirteen million, two hundred four thousand, one hundred one".