12312544505 has 16 divisors (see below), whose sum is σ = 15510182400. Its totient is φ = 9370721280.

The previous prime is 12312544487. The next prime is 12312544511. The reversal of 12312544505 is 50544521321.

It is not a de Polignac number, because 12312544505 - 2⁶ = 12312544441 is a prime.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 664040 + ... + 682329.

It is an arithmetic number, because the mean of its divisors is an integer number (969386400).

Almost surely, 2^12312544505 is an apocalyptic number.

It is an amenable number.

12312544505 is a deficient number, since it is larger than the sum of its proper divisors (3197637895).

12312544505 is a wasteful number, since it uses less digits than its factorization.

12312544505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346464.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 12312544505 in words is "twelve billion, three hundred twelve million, five hundred forty-four thousand, five hundred five".