12546554551 has 2 divisors, whose sum is σ = 12546554552. Its totient is φ = 12546554550.

The previous prime is 12546554549. The next prime is 12546554567. The reversal of 12546554551 is 15545564521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12546554551 - 2¹ = 12546554549 is a prime.

It is a super-2 number, since 2×12546554551² (a number of 21 digits) contains 22 as substring.

Together with 12546554549, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12546554498 and 12546554507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12546554521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273277275 + 6273277276.

It is an arithmetic number, because the mean of its divisors is an integer number (6273277276).

Almost surely, 2^12546554551 is an apocalyptic number.

12546554551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12546554551 is an equidigital number, since it uses as much as digits as its factorization.

12546554551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600000, while the sum is 43.

The spelling of 12546554551 in words is "twelve billion, five hundred forty-six million, five hundred fifty-four thousand, five hundred fifty-one".