12638902638757 has 2 divisors, whose sum is σ = 12638902638758. Its totient is φ = 12638902638756.

The previous prime is 12638902638737. The next prime is 12638902638773. The reversal of 12638902638757 is 75783620983621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9501473342916 + 3137429295841 = 3082446^2 + 1771279^2 .

It is a cyclic number.

It is not a de Polignac number, because 12638902638757 - 2⁷ = 12638902638629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12638902638692 and 12638902638701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12638902638737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6319451319378 + 6319451319379.

It is an arithmetic number, because the mean of its divisors is an integer number (6319451319379).

Almost surely, 2^{12638902638757} is an apocalyptic number.

It is an amenable number.

12638902638757 is a deficient number, since it is larger than the sum of its proper divisors (1).

12638902638757 is an equidigital number, since it uses as much as digits as its factorization.

12638902638757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 182891520, while the sum is 67.

The spelling of 12638902638757 in words is "twelve trillion, six hundred thirty-eight billion, nine hundred two million, six hundred thirty-eight thousand, seven hundred fifty-seven".