1340404683685 has 32 divisors (see below), whose sum is σ = 1636042561920. Its totient is φ = 1054024866048.

The previous prime is 1340404683659. The next prime is 1340404683691. The reversal of 1340404683685 is 5863864040431.

It is a cyclic number.

It is not a de Polignac number, because 1340404683685 - 2¹⁹ = 1340404159397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 573066246 + ... + 573068584.

It is an arithmetic number, because the mean of its divisors is an integer number (51126330060).

Almost surely, 2^{1340404683685} is an apocalyptic number.

It is an amenable number.

1340404683685 is a deficient number, since it is larger than the sum of its proper divisors (295637878235).

1340404683685 is a wasteful number, since it uses less digits than its factorization.

1340404683685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397.

The product of its (nonzero) digits is 6635520, while the sum is 52.

The spelling of 1340404683685 in words is "one trillion, three hundred forty billion, four hundred four million, six hundred eighty-three thousand, six hundred eighty-five".