12639015140123 has 2 divisors, whose sum is σ = 12639015140124. Its totient is φ = 12639015140122.

The previous prime is 12639015140107. The next prime is 12639015140137. The reversal of 12639015140123 is 32104151093621.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32104151093621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12639015140123 - 2⁴ = 12639015140107 is a prime.

It is not a weakly prime, because it can be changed into another prime (12639015140623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6319507570061 + 6319507570062.

It is an arithmetic number, because the mean of its divisors is an integer number (6319507570062).

Almost surely, 2^{12639015140123} is an apocalyptic number.

12639015140123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12639015140123 is an equidigital number, since it uses as much as digits as its factorization.

12639015140123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 12639015140123 in words is "twelve trillion, six hundred thirty-nine billion, fifteen million, one hundred forty thousand, one hundred twenty-three".