99999944011237 has 2 divisors, whose sum is σ = 99999944011238. Its totient is φ = 99999944011236.

The previous prime is 99999944011153. The next prime is 99999944011277. The reversal of 99999944011237 is 73211044999999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81527879259841 + 18472064751396 = 9029279^2 + 4297914^2 .

It is an emirp because it is prime and its reverse (73211044999999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99999944011237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99999944011277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999972005618 + 49999972005619.

It is an arithmetic number, because the mean of its divisors is an integer number (49999972005619).

Almost surely, 2^{99999944011237} is an apocalyptic number.

It is an amenable number.

99999944011237 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999944011237 is an equidigital number, since it uses as much as digits as its factorization.

99999944011237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 357128352, while the sum is 76.

The spelling of 99999944011237 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred forty-four million, eleven thousand, two hundred thirty-seven".