12554660505 has 16 divisors (see below), whose sum is σ = 20175180480. Its totient is φ = 6666577728.

The previous prime is 12554660473. The next prime is 12554660509. The reversal of 12554660505 is 50506645521.

It is a happy number.

12554660505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12554660505 - 2⁵ = 12554660473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12554660509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1824027 + ... + 1830896.

It is an arithmetic number, because the mean of its divisors is an integer number (1260948780).

Almost surely, 2^12554660505 is an apocalyptic number.

12554660505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12554660505 is a deficient number, since it is larger than the sum of its proper divisors (7620519975).

12554660505 is a wasteful number, since it uses less digits than its factorization.

12554660505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655160.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 12554660505 in words is "twelve billion, five hundred fifty-four million, six hundred sixty thousand, five hundred five".