12579618547 has 2 divisors, whose sum is σ = 12579618548. Its totient is φ = 12579618546.

The previous prime is 12579618523. The next prime is 12579618589. The reversal of 12579618547 is 74581697521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12579618547 - 2¹¹ = 12579616499 is a prime.

It is not a weakly prime, because it can be changed into another prime (12579618517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6289809273 + 6289809274.

It is an arithmetic number, because the mean of its divisors is an integer number (6289809274).

Almost surely, 2^12579618547 is an apocalyptic number.

12579618547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12579618547 is an equidigital number, since it uses as much as digits as its factorization.

12579618547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 55.

It can be divided in two parts, 12579 and 618547, that added together give a triangular number (631126 = T₁₁₂₃).

The spelling of 12579618547 in words is "twelve billion, five hundred seventy-nine million, six hundred eighteen thousand, five hundred forty-seven".