99634291213 has 2 divisors, whose sum is σ = 99634291214. Its totient is φ = 99634291212.

The previous prime is 99634291171. The next prime is 99634291217. The reversal of 99634291213 is 31219243699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82862228164 + 16772063049 = 287858^2 + 129507^2 .

It is a cyclic number.

It is not a de Polignac number, because 99634291213 - 2²¹ = 99632194061 is a prime.

It is a super-2 number, since 2×99634291213² (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 (99634291217) 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, 49817145606 + 49817145607.

It is an arithmetic number, because the mean of its divisors is an integer number (49817145607).

Almost surely, 2^99634291213 is an apocalyptic number.

It is an amenable number.

99634291213 is a deficient number, since it is larger than the sum of its proper divisors (1).

99634291213 is an equidigital number, since it uses as much as digits as its factorization.

99634291213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 49.

The spelling of 99634291213 in words is "ninety-nine billion, six hundred thirty-four million, two hundred ninety-one thousand, two hundred thirteen".