1288210662556 has 6 divisors (see below), whose sum is σ = 2254368659480. Its totient is φ = 644105331276.

The previous prime is 1288210662533. The next prime is 1288210662577. The reversal of 1288210662556 is 6552660128821.

It is a super-2 number, since 2×1288210662556² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161026332816 + ... + 161026332823.

Almost surely, 2^{1288210662556} is an apocalyptic number.

It is an amenable number.

1288210662556 is a deficient number, since it is larger than the sum of its proper divisors (966157996924).

1288210662556 is a wasteful number, since it uses less digits than its factorization.

1288210662556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322052665643 (or 322052665641 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 1288210662556 in words is "one trillion, two hundred eighty-eight billion, two hundred ten million, six hundred sixty-two thousand, five hundred fifty-six".