12588513505 has 4 divisors (see below), whose sum is σ = 15106216212. Its totient is φ = 10070810800.

The previous prime is 12588513499. The next prime is 12588513533. The reversal of 12588513505 is 50531588521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50531588521 = 3797 ⋅13308293.

It can be written as a sum of positive squares in 2 ways, for example, as 7933999329 + 4654514176 = 89073^2 + 68224^2 .

It is not a de Polignac number, because 12588513505 - 2³¹ = 10441029857 is a prime.

It is a Duffinian 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, 1258851346 + ... + 1258851355.

It is an arithmetic number, because the mean of its divisors is an integer number (3776554053).

Almost surely, 2^12588513505 is an apocalyptic number.

It is an amenable number.

12588513505 is a deficient number, since it is larger than the sum of its proper divisors (2517702707).

12588513505 is an equidigital number, since it uses as much as digits as its factorization.

12588513505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517702706.

The product of its (nonzero) digits is 240000, while the sum is 43.

The spelling of 12588513505 in words is "twelve billion, five hundred eighty-eight million, five hundred thirteen thousand, five hundred five".