581098333961 has 2 divisors, whose sum is σ = 581098333962. Its totient is φ = 581098333960.

The previous prime is 581098333889. The next prime is 581098333987. The reversal of 581098333961 is 169333890185.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559055290000 + 22043043961 = 747700^2 + 148469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-581098333961 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 581098333897 and 581098333906.

It is not a weakly prime, because it can be changed into another prime (581098339961) 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, 290549166980 + 290549166981.

It is an arithmetic number, because the mean of its divisors is an integer number (290549166981).

Almost surely, 2^581098333961 is an apocalyptic number.

It is an amenable number.

581098333961 is a deficient number, since it is larger than the sum of its proper divisors (1).

581098333961 is an equidigital number, since it uses as much as digits as its factorization.

581098333961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 581098333961 in words is "five hundred eighty-one billion, ninety-eight million, three hundred thirty-three thousand, nine hundred sixty-one".