99940505111 has 2 divisors, whose sum is σ = 99940505112. Its totient is φ = 99940505110.

The previous prime is 99940505087. The next prime is 99940505143. The reversal of 99940505111 is 11150504999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99940505111 - 2¹⁰ = 99940504087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99940505011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49970252555 + 49970252556.

It is an arithmetic number, because the mean of its divisors is an integer number (49970252556).

Almost surely, 2^99940505111 is an apocalyptic number.

99940505111 is a deficient number, since it is larger than the sum of its proper divisors (1).

99940505111 is an equidigital number, since it uses as much as digits as its factorization.

99940505111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 44.

The spelling of 99940505111 in words is "ninety-nine billion, nine hundred forty million, five hundred five thousand, one hundred eleven".