99561343313 has 2 divisors, whose sum is σ = 99561343314. Its totient is φ = 99561343312.

The previous prime is 99561343307. The next prime is 99561343411. The reversal of 99561343313 is 31334316599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96765789184 + 2795554129 = 311072^2 + 52873^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99561343313 is a prime.

It is a super-2 number, since 2×99561343313² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99561343303) 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, 49780671656 + 49780671657.

It is an arithmetic number, because the mean of its divisors is an integer number (49780671657).

Almost surely, 2^99561343313 is an apocalyptic number.

It is an amenable number.

99561343313 is a deficient number, since it is larger than the sum of its proper divisors (1).

99561343313 is an equidigital number, since it uses as much as digits as its factorization.

99561343313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 787320, while the sum is 47.

The spelling of 99561343313 in words is "ninety-nine billion, five hundred sixty-one million, three hundred forty-three thousand, three hundred thirteen".