12750138889991 has 2 divisors, whose sum is σ = 12750138889992. Its totient is φ = 12750138889990.

The previous prime is 12750138889927. The next prime is 12750138890231. The reversal of 12750138889991 is 19998883105721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12750138889991 - 2⁶ = 12750138889927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12750138829991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375069444995 + 6375069444996.

It is an arithmetic number, because the mean of its divisors is an integer number (6375069444996).

Almost surely, 2^{12750138889991} is an apocalyptic number.

12750138889991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12750138889991 is an equidigital number, since it uses as much as digits as its factorization.

12750138889991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 71.

The spelling of 12750138889991 in words is "twelve trillion, seven hundred fifty billion, one hundred thirty-eight million, eight hundred eighty-nine thousand, nine hundred ninety-one".