12334401991 has 2 divisors, whose sum is σ = 12334401992. Its totient is φ = 12334401990.

The previous prime is 12334401983. The next prime is 12334402019. The reversal of 12334401991 is 19910443321.

It is a happy number.

12334401991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12334401991 - 2³ = 12334401983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12334401991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12334401691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6167200995 + 6167200996.

It is an arithmetic number, because the mean of its divisors is an integer number (6167200996).

Almost surely, 2^12334401991 is an apocalyptic number.

12334401991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12334401991 is an equidigital number, since it uses as much as digits as its factorization.

12334401991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 12334401991 in words is "twelve billion, three hundred thirty-four million, four hundred one thousand, nine hundred ninety-one".