1280011042268 has 36 divisors (see below), whose sum is σ = 2605883478912. Its totient is φ = 548545273920.

The previous prime is 1280011042201. The next prime is 1280011042333. The reversal of 1280011042268 is 8622401100821.

It is a partition number, being equal to the number of ways a set of 187 identical objects can be partitioned into subset.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3493253 + ... + 3842243.

It is an arithmetic number, because the mean of its divisors is an integer number (72385652192).

Almost surely, 2^{1280011042268} is an apocalyptic number.

It is an amenable number.

1280011042268 is an abundant number, since it is smaller than the sum of its proper divisors (1325872436644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1280011042268 is a wasteful number, since it uses less digits than its factorization.

1280011042268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367722 (or 367713 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The spelling of 1280011042268 in words is "one trillion, two hundred eighty billion, eleven million, forty-two thousand, two hundred sixty-eight".