11966491003 has 2 divisors, whose sum is σ = 11966491004. Its totient is φ = 11966491002.

The previous prime is 11966491001. The next prime is 11966491007. The reversal of 11966491003 is 30019466911.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11966491003 - 2¹ = 11966491001 is a prime.

Together with 11966491001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11966491001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5983245501 + 5983245502.

It is an arithmetic number, because the mean of its divisors is an integer number (5983245502).

Almost surely, 2^11966491003 is an apocalyptic number.

11966491003 is a deficient number, since it is larger than the sum of its proper divisors (1).

11966491003 is an equidigital number, since it uses as much as digits as its factorization.

11966491003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 11966491003 in words is "eleven billion, nine hundred sixty-six million, four hundred ninety-one thousand, three".