1268554690928 has 40 divisors (see below), whose sum is σ = 2827794530400. Its totient is φ = 540017521920.

The previous prime is 1268554690849. The next prime is 1268554691017. The reversal of 1268554690928 is 8290964558621.

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 7 ways as a sum of consecutive naturals, for example, 37991303 + ... + 38024678.

It is an arithmetic number, because the mean of its divisors is an integer number (70694863260).

Almost surely, 2^{1268554690928} is an apocalyptic number.

It is an amenable number.

1268554690928 is an abundant number, since it is smaller than the sum of its proper divisors (1559239839472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1268554690928 is a wasteful number, since it uses less digits than its factorization.

1268554690928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76016145 (or 76016139 counting only the distinct ones).

The product of its (nonzero) digits is 74649600, while the sum is 65.

The spelling of 1268554690928 in words is "one trillion, two hundred sixty-eight billion, five hundred fifty-four million, six hundred ninety thousand, nine hundred twenty-eight".