1288648974727 has 4 divisors (see below), whose sum is σ = 1288651268520. Its totient is φ = 1288646680936.

The previous prime is 1288648974703. The next prime is 1288648974737. The reversal of 1288648974727 is 7274798468821.

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-1288648974727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288648974727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288648974737) 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, 328248 + ... + 1638610.

It is an arithmetic number, because the mean of its divisors is an integer number (322162817130).

Almost surely, 2^{1288648974727} is an apocalyptic number.

1288648974727 is a deficient number, since it is larger than the sum of its proper divisors (2293793).

1288648974727 is an equidigital number, since it uses as much as digits as its factorization.

1288648974727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293792.

The product of its digits is 606928896, while the sum is 73.

The spelling of 1288648974727 in words is "one trillion, two hundred eighty-eight billion, six hundred forty-eight million, nine hundred seventy-four thousand, seven hundred twenty-seven".