12045971551 has 2 divisors, whose sum is σ = 12045971552. Its totient is φ = 12045971550.

The previous prime is 12045971543. The next prime is 12045971569. The reversal of 12045971551 is 15517954021.

It is a weak prime.

It is an emirp because it is prime and its reverse (15517954021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12045971551 - 2³ = 12045971543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12045971501) 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, 6022985775 + 6022985776.

It is an arithmetic number, because the mean of its divisors is an integer number (6022985776).

Almost surely, 2^12045971551 is an apocalyptic number.

12045971551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12045971551 is an equidigital number, since it uses as much as digits as its factorization.

12045971551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 40.

The spelling of 12045971551 in words is "twelve billion, forty-five million, nine hundred seventy-one thousand, five hundred fifty-one".