1269876087269 has 2 divisors, whose sum is σ = 1269876087270. Its totient is φ = 1269876087268.

The previous prime is 1269876087217. The next prime is 1269876087349. The reversal of 1269876087269 is 9627806789621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1265033319169 + 4842768100 = 1124737^2 + 69590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1269876087269 - 2¹² = 1269876083173 is a prime.

It is a super-2 number, since 2×1269876087269² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1269876087209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634938043634 + 634938043635.

It is an arithmetic number, because the mean of its divisors is an integer number (634938043635).

Almost surely, 2^{1269876087269} is an apocalyptic number.

It is an amenable number.

1269876087269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1269876087269 is an equidigital number, since it uses as much as digits as its factorization.

1269876087269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 1269876087269 in words is "one trillion, two hundred sixty-nine billion, eight hundred seventy-six million, eighty-seven thousand, two hundred sixty-nine".