12143503545 has 16 divisors (see below), whose sum is σ = 20274371712. Its totient is φ = 6194946560.

The previous prime is 12143503523. The next prime is 12143503549. The reversal of 12143503545 is 54530534121.

It is not a de Polignac number, because 12143503545 - 2⁵ = 12143503513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12143503549) 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 15 ways as a sum of consecutive naturals, for example, 17598936 + ... + 17599625.

It is an arithmetic number, because the mean of its divisors is an integer number (1267148232).

Almost surely, 2^12143503545 is an apocalyptic number.

12143503545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12143503545 is a deficient number, since it is larger than the sum of its proper divisors (8130868167).

12143503545 is a wasteful number, since it uses less digits than its factorization.

12143503545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35198592.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 12143503545 in words is "twelve billion, one hundred forty-three million, five hundred three thousand, five hundred forty-five".