12546537851 has 2 divisors, whose sum is σ = 12546537852. Its totient is φ = 12546537850.

The previous prime is 12546537833. The next prime is 12546537911. The reversal of 12546537851 is 15873564521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12546537851 - 2²² = 12542343547 is a prime.

It is a super-2 number, since 2×12546537851² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12546537796 and 12546537805.

It is not a weakly prime, because it can be changed into another prime (12546537151) 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, 6273268925 + 6273268926.

It is an arithmetic number, because the mean of its divisors is an integer number (6273268926).

Almost surely, 2^12546537851 is an apocalyptic number.

12546537851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12546537851 is an equidigital number, since it uses as much as digits as its factorization.

12546537851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008000, while the sum is 47.

The spelling of 12546537851 in words is "twelve billion, five hundred forty-six million, five hundred thirty-seven thousand, eight hundred fifty-one".