99772868443 has 2 divisors, whose sum is σ = 99772868444. Its totient is φ = 99772868442.

The previous prime is 99772868441. The next prime is 99772868467. The reversal of 99772868443 is 34486827799.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99772868443 - 2¹ = 99772868441 is a prime.

Together with 99772868441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (99772868441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49886434221 + 49886434222.

It is an arithmetic number, because the mean of its divisors is an integer number (49886434222).

Almost surely, 2^99772868443 is an apocalyptic number.

99772868443 is a deficient number, since it is larger than the sum of its proper divisors (1).

99772868443 is an equidigital number, since it uses as much as digits as its factorization.

99772868443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146313216, while the sum is 67.

The spelling of 99772868443 in words is "ninety-nine billion, seven hundred seventy-two million, eight hundred sixty-eight thousand, four hundred forty-three".