12554548636 has 12 divisors (see below), whose sum is σ = 25109097328. Its totient is φ = 5380520832.

The previous prime is 12554548553. The next prime is 12554548649. The reversal of 12554548636 is 63684545521.

12554548636 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12554548636.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 224188341 + ... + 224188396.

Almost surely, 2^12554548636 is an apocalyptic number.

It is an amenable number.

12554548636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12554548636 is a wasteful number, since it uses less digits than its factorization.

12554548636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448376748 (or 448376746 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 49.

The spelling of 12554548636 in words is "twelve billion, five hundred fifty-four million, five hundred forty-eight thousand, six hundred thirty-six".