1288406265843 has 16 divisors (see below), whose sum is σ = 1808812853120. Its totient is φ = 813494762496.

The previous prime is 1288406265803. The next prime is 1288406265851. The reversal of 1288406265843 is 3485626048821.

It is not a de Polignac number, because 1288406265843 - 2²⁸ = 1288137830387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (1288406265803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3072205 + ... + 3466302.

It is an arithmetic number, because the mean of its divisors is an integer number (113050803320).

Almost surely, 2^{1288406265843} is an apocalyptic number.

1288406265843 is a deficient number, since it is larger than the sum of its proper divisors (520406587277).

1288406265843 is a wasteful number, since it uses less digits than its factorization.

1288406265843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541986.

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 1288406265843 in words is "one trillion, two hundred eighty-eight billion, four hundred six million, two hundred sixty-five thousand, eight hundred forty-three".