1272186638759 has 2 divisors, whose sum is σ = 1272186638760. Its totient is φ = 1272186638758.

The previous prime is 1272186638743. The next prime is 1272186638791. The reversal of 1272186638759 is 9578366812721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1272186638759 - 2⁴ = 1272186638743 is a prime.

It is a super-2 number, since 2×1272186638759² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1272186638695 and 1272186638704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272186638729) 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, 636093319379 + 636093319380.

It is an arithmetic number, because the mean of its divisors is an integer number (636093319380).

Almost surely, 2^{1272186638759} is an apocalyptic number.

1272186638759 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272186638759 is an equidigital number, since it uses as much as digits as its factorization.

1272186638759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 65.

The spelling of 1272186638759 in words is "one trillion, two hundred seventy-two billion, one hundred eighty-six million, six hundred thirty-eight thousand, seven hundred fifty-nine".