99663614261 has 2 divisors, whose sum is σ = 99663614262. Its totient is φ = 99663614260.

The previous prime is 99663614227. The next prime is 99663614273. The reversal of 99663614261 is 16241636699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58862038225 + 40801576036 = 242615^2 + 201994^2 .

It is a cyclic number.

It is not a de Polignac number, because 99663614261 - 2¹⁰ = 99663613237 is a prime.

It is a super-2 number, since 2×99663614261² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99663614291) 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, 49831807130 + 49831807131.

It is an arithmetic number, because the mean of its divisors is an integer number (49831807131).

Almost surely, 2^99663614261 is an apocalyptic number.

It is an amenable number.

99663614261 is a deficient number, since it is larger than the sum of its proper divisors (1).

99663614261 is an equidigital number, since it uses as much as digits as its factorization.

99663614261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 53.

The spelling of 99663614261 in words is "ninety-nine billion, six hundred sixty-three million, six hundred fourteen thousand, two hundred sixty-one".