1280656832011 has 8 divisors (see below), whose sum is σ = 1288382590944. Its totient is φ = 1272942312960.

The previous prime is 1280656831901. The next prime is 1280656832047. The reversal of 1280656832011 is 1102386560821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1280656832011 - 2²¹ = 1280654734859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1280656838011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2581351 + ... + 3037216.

It is an arithmetic number, because the mean of its divisors is an integer number (161047823868).

Almost surely, 2^{1280656832011} is an apocalyptic number.

1280656832011 is a deficient number, since it is larger than the sum of its proper divisors (7725758933).

1280656832011 is a wasteful number, since it uses less digits than its factorization.

1280656832011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5619941.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 1280656832011 in words is "one trillion, two hundred eighty billion, six hundred fifty-six million, eight hundred thirty-two thousand, eleven".