1288763800139 has 4 divisors (see below), whose sum is σ = 1288771743120. Its totient is φ = 1288755857160.

The previous prime is 1288763800111. The next prime is 1288763800147. The reversal of 1288763800139 is 9310083678821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288763800139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288763850139) 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 3 ways as a sum of consecutive naturals, for example, 3722927 + ... + 4054344.

It is an arithmetic number, because the mean of its divisors is an integer number (322192935780).

Almost surely, 2^{1288763800139} is an apocalyptic number.

1288763800139 is a deficient number, since it is larger than the sum of its proper divisors (7942981).

1288763800139 is an equidigital number, since it uses as much as digits as its factorization.

1288763800139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7942980.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 1288763800139 in words is "one trillion, two hundred eighty-eight billion, seven hundred sixty-three million, eight hundred thousand, one hundred thirty-nine".