12613455545 has 4 divisors (see below), whose sum is σ = 15136146660. Its totient is φ = 10090764432.

The previous prime is 12613455457. The next prime is 12613455583. The reversal of 12613455545 is 54555431621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2630048656 + 9983406889 = 51284^2 + 99917^2 .

It is a cyclic number.

It is not a de Polignac number, because 12613455545 - 2²⁴ = 12596678329 is a prime.

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, 1261345550 + ... + 1261345559.

It is an arithmetic number, because the mean of its divisors is an integer number (3784036665).

Almost surely, 2^12613455545 is an apocalyptic number.

It is an amenable number.

12613455545 is a deficient number, since it is larger than the sum of its proper divisors (2522691115).

12613455545 is an equidigital number, since it uses as much as digits as its factorization.

12613455545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522691114.

The product of its digits is 360000, while the sum is 41.

The spelling of 12613455545 in words is "twelve billion, six hundred thirteen million, four hundred fifty-five thousand, five hundred forty-five".