1286033561256 has 32 divisors (see below), whose sum is σ = 3234335912640. Its totient is φ = 426110919168.

The previous prime is 1286033561237. The next prime is 1286033561269. The reversal of 1286033561256 is 6521653306821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160429321 + ... + 160437336.

It is an arithmetic number, because the mean of its divisors is an integer number (101072997270).

Almost surely, 2^{1286033561256} is an apocalyptic number.

It is an amenable number.

1286033561256 is an abundant number, since it is smaller than the sum of its proper divisors (1948302351384).

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

1286033561256 is a wasteful number, since it uses less digits than its factorization.

1286033561256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320866833 (or 320866829 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 1286033561256 in words is "one trillion, two hundred eighty-six billion, thirty-three million, five hundred sixty-one thousand, two hundred fifty-six".