1263140360269 has 2 divisors, whose sum is σ = 1263140360270. Its totient is φ = 1263140360268.

The previous prime is 1263140360221. The next prime is 1263140360341. The reversal of 1263140360269 is 9620630413621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 733141800169 + 529998560100 = 856237^2 + 728010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263140360269 is a prime.

It is a super-2 number, since 2×1263140360269² (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 (1263147360269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631570180134 + 631570180135.

It is an arithmetic number, because the mean of its divisors is an integer number (631570180135).

Almost surely, 2^{1263140360269} is an apocalyptic number.

It is an amenable number.

1263140360269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263140360269 is an equidigital number, since it uses as much as digits as its factorization.

1263140360269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 1263140360269 in words is "one trillion, two hundred sixty-three billion, one hundred forty million, three hundred sixty thousand, two hundred sixty-nine".