11999073643 has 2 divisors, whose sum is σ = 11999073644. Its totient is φ = 11999073642.

The previous prime is 11999073641. The next prime is 11999073659. The reversal of 11999073643 is 34637099911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11999073643 - 2¹ = 11999073641 is a prime.

Together with 11999073641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11999073641) 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, 5999536821 + 5999536822.

It is an arithmetic number, because the mean of its divisors is an integer number (5999536822).

Almost surely, 2^11999073643 is an apocalyptic number.

11999073643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11999073643 is an equidigital number, since it uses as much as digits as its factorization.

11999073643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248, while the sum is 52.

The spelling of 11999073643 in words is "eleven billion, nine hundred ninety-nine million, seventy-three thousand, six hundred forty-three".