12054663551 has 4 divisors (see below), whose sum is σ = 13776758352. Its totient is φ = 10332568752.

The previous prime is 12054663539. The next prime is 12054663589. The reversal of 12054663551 is 15536645021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15536645021 = 19 ⋅817718159.

It is a cyclic number.

It is not a de Polignac number, because 12054663551 - 2¹⁴ = 12054647167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12054663151) by changing a digit.

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, 861047390 + ... + 861047403.

It is an arithmetic number, because the mean of its divisors is an integer number (3444189588).

Almost surely, 2^12054663551 is an apocalyptic number.

12054663551 is a deficient number, since it is larger than the sum of its proper divisors (1722094801).

12054663551 is an equidigital number, since it uses as much as digits as its factorization.

12054663551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722094800.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 12054663551 in words is "twelve billion, fifty-four million, six hundred sixty-three thousand, five hundred fifty-one".