1288354981667 has 16 divisors (see below), whose sum is σ = 1430303962080. Its totient is φ = 1153078924032.

The previous prime is 1288354981649. The next prime is 1288354981721. The reversal of 1288354981667 is 7661894538821.

It is a cyclic number.

It is not a de Polignac number, because 1288354981667 - 2⁶ = 1288354981603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1288354981597 and 1288354981606.

It is not an unprimeable number, because it can be changed into a prime (1288354981607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11449028 + ... + 11561009.

It is an arithmetic number, because the mean of its divisors is an integer number (89393997630).

Almost surely, 2^{1288354981667} is an apocalyptic number.

1288354981667 is a deficient number, since it is larger than the sum of its proper divisors (141948980413).

1288354981667 is a wasteful number, since it uses less digits than its factorization.

1288354981667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23010182.

The product of its digits is 139345920, while the sum is 68.

The spelling of 1288354981667 in words is "one trillion, two hundred eighty-eight billion, three hundred fifty-four million, nine hundred eighty-one thousand, six hundred sixty-seven".