12661633043 has 2 divisors, whose sum is σ = 12661633044. Its totient is φ = 12661633042.

The previous prime is 12661633037. The next prime is 12661633067. The reversal of 12661633043 is 34033616621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12661633043 - 2⁶ = 12661632979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12661632994 and 12661633012.

It is not a weakly prime, because it can be changed into another prime (12661635043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6330816521 + 6330816522.

It is an arithmetic number, because the mean of its divisors is an integer number (6330816522).

Almost surely, 2^12661633043 is an apocalyptic number.

12661633043 is a deficient number, since it is larger than the sum of its proper divisors (1).

12661633043 is an equidigital number, since it uses as much as digits as its factorization.

12661633043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 12661633043 in words is "twelve billion, six hundred sixty-one million, six hundred thirty-three thousand, forty-three".