1268540376849 has 12 divisors (see below), whose sum is σ = 1832352371200. Its totient is φ = 845686074744.

The previous prime is 1268540376847. The next prime is 1268540376853. The reversal of 1268540376849 is 9486730458621.

1268540376849 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 540 + 3 + 7 + 6 + 84 + 9 = 666.

It is not a de Polignac number, because 1268540376849 - 2¹ = 1268540376847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268540376847) 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 11 ways as a sum of consecutive naturals, for example, 562812 + ... + 1689330.

It is a 1-persistent number, because it is pandigital, but 2⋅1268540376849 = 2537080753698 is not.

Almost surely, 2^{1268540376849} is an apocalyptic number.

It is an amenable number.

1268540376849 is a deficient number, since it is larger than the sum of its proper divisors (563811994351).

1268540376849 is a wasteful number, since it uses less digits than its factorization.

1268540376849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251644 (or 1251641 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 1268540376849 in words is "one trillion, two hundred sixty-eight billion, five hundred forty million, three hundred seventy-six thousand, eight hundred forty-nine".