12870072913 has 2 divisors, whose sum is σ = 12870072914. Its totient is φ = 12870072912.

The previous prime is 12870072899. The next prime is 12870072923. The reversal of 12870072913 is 31927007821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9982407744 + 2887665169 = 99912^2 + 53737^2 .

It is a cyclic number.

It is not a de Polignac number, because 12870072913 - 2⁹ = 12870072401 is a prime.

It is not a weakly prime, because it can be changed into another prime (12870072923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435036456 + 6435036457.

It is an arithmetic number, because the mean of its divisors is an integer number (6435036457).

Almost surely, 2^12870072913 is an apocalyptic number.

It is an amenable number.

12870072913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12870072913 is an equidigital number, since it uses as much as digits as its factorization.

12870072913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 12870072913 in words is "twelve billion, eight hundred seventy million, seventy-two thousand, nine hundred thirteen".