1340866754009 has 16 divisors (see below), whose sum is σ = 1407938737920. Its totient is φ = 1275187415040.

The previous prime is 1340866753991. The next prime is 1340866754023. The reversal of 1340866754009 is 9004576680431.

It is a cyclic number.

It is not a de Polignac number, because 1340866754009 - 2³² = 1336571786713 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1340866754209) 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, 26090192 + ... + 26141534.

It is an arithmetic number, because the mean of its divisors is an integer number (87996171120).

Almost surely, 2^{1340866754009} is an apocalyptic number.

It is an amenable number.

1340866754009 is a deficient number, since it is larger than the sum of its proper divisors (67071983911).

1340866754009 is a wasteful number, since it uses less digits than its factorization.

1340866754009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64880.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 1340866754009 in words is "one trillion, three hundred forty billion, eight hundred sixty-six million, seven hundred fifty-four thousand, nine".