12554660543 has 2 divisors, whose sum is σ = 12554660544. Its totient is φ = 12554660542.

The previous prime is 12554660509. The next prime is 12554660549. The reversal of 12554660543 is 34506645521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12554660543 - 2²⁴ = 12537883327 is a prime.

It is a super-2 number, since 2×12554660543² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12554660543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12554660549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277330271 + 6277330272.

It is an arithmetic number, because the mean of its divisors is an integer number (6277330272).

Almost surely, 2^12554660543 is an apocalyptic number.

12554660543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12554660543 is an equidigital number, since it uses as much as digits as its factorization.

12554660543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 12554660543 in words is "twelve billion, five hundred fifty-four million, six hundred sixty thousand, five hundred forty-three".