12546211987 has 2 divisors, whose sum is σ = 12546211988. Its totient is φ = 12546211986.

The previous prime is 12546211967. The next prime is 12546212051. The reversal of 12546211987 is 78911264521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12546211987 - 2¹⁹ = 12545687699 is a prime.

It is not a weakly prime, because it can be changed into another prime (12546211967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273105993 + 6273105994.

It is an arithmetic number, because the mean of its divisors is an integer number (6273105994).

Almost surely, 2^12546211987 is an apocalyptic number.

12546211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12546211987 is an equidigital number, since it uses as much as digits as its factorization.

12546211987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 46.

The spelling of 12546211987 in words is "twelve billion, five hundred forty-six million, two hundred eleven thousand, nine hundred eighty-seven".