12520115479 has 2 divisors, whose sum is σ = 12520115480. Its totient is φ = 12520115478.

The previous prime is 12520115449. The next prime is 12520115519. The reversal of 12520115479 is 97451102521.

12520115479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (97451102521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12520115479 - 2¹⁹ = 12519591191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12520115449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260057739 + 6260057740.

It is an arithmetic number, because the mean of its divisors is an integer number (6260057740).

Almost surely, 2^12520115479 is an apocalyptic number.

12520115479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12520115479 is an equidigital number, since it uses as much as digits as its factorization.

12520115479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The spelling of 12520115479 in words is "twelve billion, five hundred twenty million, one hundred fifteen thousand, four hundred seventy-nine".