12870528718 has 4 divisors (see below), whose sum is σ = 19305793080. Its totient is φ = 6435264358.

The previous prime is 12870528689. The next prime is 12870528719. The reversal of 12870528718 is 81782507821.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870528719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3217632178 + ... + 3217632181.

It is an arithmetic number, because the mean of its divisors is an integer number (4826448270).

Almost surely, 2^12870528718 is an apocalyptic number.

12870528718 is a deficient number, since it is larger than the sum of its proper divisors (6435264362).

12870528718 is an equidigital number, since it uses as much as digits as its factorization.

12870528718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6435264361.

The product of its (nonzero) digits is 501760, while the sum is 49.

The spelling of 12870528718 in words is "twelve billion, eight hundred seventy million, five hundred twenty-eight thousand, seven hundred eighteen".