12051534427 has 2 divisors, whose sum is σ = 12051534428. Its totient is φ = 12051534426.

The previous prime is 12051534371. The next prime is 12051534433. The reversal of 12051534427 is 72443515021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12051534427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12051534392 and 12051534401.

It is not a weakly prime, because it can be changed into another prime (12051535427) 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, 6025767213 + 6025767214.

It is an arithmetic number, because the mean of its divisors is an integer number (6025767214).

Almost surely, 2^12051534427 is an apocalyptic number.

12051534427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12051534427 is an equidigital number, since it uses as much as digits as its factorization.

12051534427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 12051534427 in words is "twelve billion, fifty-one million, five hundred thirty-four thousand, four hundred twenty-seven".