12615238019 has 2 divisors, whose sum is σ = 12615238020. Its totient is φ = 12615238018.

The previous prime is 12615237997. The next prime is 12615238021. The reversal of 12615238019 is 91083251621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12615238019 - 2²⁴ = 12598460803 is a prime.

It is a super-2 number, since 2×12615238019² (a number of 21 digits) contains 22 as substring.

Together with 12615238021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12615231019) 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, 6307619009 + 6307619010.

It is an arithmetic number, because the mean of its divisors is an integer number (6307619010).

Almost surely, 2^12615238019 is an apocalyptic number.

12615238019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12615238019 is an equidigital number, since it uses as much as digits as its factorization.

12615238019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 12615238019 in words is "twelve billion, six hundred fifteen million, two hundred thirty-eight thousand, nineteen".