99634290689 has 2 divisors, whose sum is σ = 99634290690. Its totient is φ = 99634290688.

The previous prime is 99634290631. The next prime is 99634290739. The reversal of 99634290689 is 98609243699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94273561600 + 5360729089 = 307040^2 + 73217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99634290689 is a prime.

It is a super-2 number, since 2×99634290689² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99634292689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49817145344 + 49817145345.

It is an arithmetic number, because the mean of its divisors is an integer number (49817145345).

Almost surely, 2^99634290689 is an apocalyptic number.

It is an amenable number.

99634290689 is a deficient number, since it is larger than the sum of its proper divisors (1).

99634290689 is an equidigital number, since it uses as much as digits as its factorization.

99634290689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45349632, while the sum is 65.

The spelling of 99634290689 in words is "ninety-nine billion, six hundred thirty-four million, two hundred ninety thousand, six hundred eighty-nine".