1288749622406 has 12 divisors (see below), whose sum is σ = 2053526648388. Its totient is φ = 606470410272.

The previous prime is 1288749622399. The next prime is 1288749622411. The reversal of 1288749622406 is 6042269478821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1114834736 + ... + 1114835891.

It is an arithmetic number, because the mean of its divisors is an integer number (171127220699).

Almost surely, 2^{1288749622406} is an apocalyptic number.

1288749622406 is a deficient number, since it is larger than the sum of its proper divisors (764777025982).

1288749622406 is a wasteful number, since it uses less digits than its factorization.

1288749622406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229670663 (or 2229670646 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 1288749622406 in words is "one trillion, two hundred eighty-eight billion, seven hundred forty-nine million, six hundred twenty-two thousand, four hundred six".