99243756811 has 16 divisors (see below), whose sum is σ = 100370792448. Its totient is φ = 98124998400.

The previous prime is 99243756809. The next prime is 99243756851. The reversal of 99243756811 is 11865734299.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 99243756811 - 2¹ = 99243756809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99243756851) 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 in 15 ways as a sum of consecutive naturals, for example, 22314790 + ... + 22319236.

It is an arithmetic number, because the mean of its divisors is an integer number (6273174528).

Almost surely, 2^99243756811 is an apocalyptic number.

99243756811 is a deficient number, since it is larger than the sum of its proper divisors (1127035637).

99243756811 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (99243756810) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (5322).

99243756811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322.

The product of its digits is 3265920, while the sum is 55.

The spelling of 99243756811 in words is "ninety-nine billion, two hundred forty-three million, seven hundred fifty-six thousand, eight hundred eleven".