12504513445 has 4 divisors (see below), whose sum is σ = 15005416140. Its totient is φ = 10003610752.

The previous prime is 12504513407. The next prime is 12504513457. The reversal of 12504513445 is 54431540521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54431540521 = 3019 ⋅18029659.

It can be written as a sum of positive squares in 2 ways, for example, as 8614995489 + 3889517956 = 92817^2 + 62366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12504513445 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12504513445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250451340 + ... + 1250451349.

It is an arithmetic number, because the mean of its divisors is an integer number (3751354035).

Almost surely, 2^12504513445 is an apocalyptic number.

It is an amenable number.

12504513445 is a deficient number, since it is larger than the sum of its proper divisors (2500902695).

12504513445 is an equidigital number, since it uses as much as digits as its factorization.

12504513445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500902694.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 12504513445 in words is "twelve billion, five hundred four million, five hundred thirteen thousand, four hundred forty-five".