12519013939 has 2 divisors, whose sum is σ = 12519013940. Its totient is φ = 12519013938.

The previous prime is 12519013891. The next prime is 12519013961. The reversal of 12519013939 is 93931091521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12519013939 - 2⁷ = 12519013811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12519013895 and 12519013904.

It is not a weakly prime, because it can be changed into another prime (12519014939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6259506969 + 6259506970.

It is an arithmetic number, because the mean of its divisors is an integer number (6259506970).

Almost surely, 2^12519013939 is an apocalyptic number.

12519013939 is a deficient number, since it is larger than the sum of its proper divisors (1).

12519013939 is an equidigital number, since it uses as much as digits as its factorization.

12519013939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65610, while the sum is 43.

It can be divided in two parts, 125190 and 13939, that added together give a square (139129 = 373²).

The spelling of 12519013939 in words is "twelve billion, five hundred nineteen million, thirteen thousand, nine hundred thirty-nine".