1269143790017 has 4 divisors (see below), whose sum is σ = 1269258458580. Its totient is φ = 1269029121456.

The previous prime is 1269143789989. The next prime is 1269143790049. The reversal of 1269143790017 is 7100973419621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 670734792256 + 598408997761 = 818984^2 + 773569^2 .

It is a cyclic number.

It is not a de Polignac number, because 1269143790017 - 2¹⁰ = 1269143788993 is a prime.

It is a super-2 number, since 2×1269143790017² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1269143790517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57317678 + ... + 57339815.

It is an arithmetic number, because the mean of its divisors is an integer number (317314614645).

Almost surely, 2^{1269143790017} is an apocalyptic number.

It is an amenable number.

1269143790017 is a deficient number, since it is larger than the sum of its proper divisors (114668563).

1269143790017 is a wasteful number, since it uses less digits than its factorization.

1269143790017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114668562.

The product of its (nonzero) digits is 571536, while the sum is 50.

The spelling of 1269143790017 in words is "one trillion, two hundred sixty-nine billion, one hundred forty-three million, seven hundred ninety thousand, seventeen".