1290871969281 has 12 divisors (see below), whose sum is σ = 1865033597440. Its totient is φ = 860377888440.

The previous prime is 1290871969249. The next prime is 1290871969291. The reversal of 1290871969281 is 1829691780921.

1290871969281 is a `hidden beast` number, since 1 + 2 + 90 + 87 + 196 + 9 + 281 = 666.

It is not a de Polignac number, because 1290871969281 - 2⁵ = 1290871969249 is a prime.

It is a super-3 number, since 3×1290871969281³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1290871969201) 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 in 11 ways as a sum of consecutive naturals, for example, 16911841 + ... + 16987998.

Almost surely, 2^{1290871969281} is an apocalyptic number.

It is an amenable number.

1290871969281 is a deficient number, since it is larger than the sum of its proper divisors (574161628159).

1290871969281 is a wasteful number, since it uses less digits than its factorization.

1290871969281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33904076 (or 33904073 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 63.

The spelling of 1290871969281 in words is "one trillion, two hundred ninety billion, eight hundred seventy-one million, nine hundred sixty-nine thousand, two hundred eighty-one".