581098339961 has 2 divisors, whose sum is σ = 581098339962. Its totient is φ = 581098339960.

The previous prime is 581098339951. The next prime is 581098340003. The reversal of 581098339961 is 169933890185.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420365502736 + 160732837225 = 648356^2 + 400915^2 .

It is a cyclic number.

It is not a de Polignac number, because 581098339961 - 2⁶ = 581098339897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 581098339894 and 581098339903.

It is not a weakly prime, because it can be changed into another prime (581098339951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290549169980 + 290549169981.

It is an arithmetic number, because the mean of its divisors is an integer number (290549169981).

Almost surely, 2^581098339961 is an apocalyptic number.

It is an amenable number.

581098339961 is a deficient number, since it is larger than the sum of its proper divisors (1).

581098339961 is an equidigital number, since it uses as much as digits as its factorization.

581098339961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12597120, while the sum is 62.

The spelling of 581098339961 in words is "five hundred eighty-one billion, ninety-eight million, three hundred thirty-nine thousand, nine hundred sixty-one".