1340661353353 has 16 divisors (see below), whose sum is σ = 1557605445760. Its totient is φ = 1130079859200.

The previous prime is 1340661353351. The next prime is 1340661353363. The reversal of 1340661353353 is 3533531660431.

It is a cyclic number.

It is not a de Polignac number, because 1340661353353 - 2¹ = 1340661353351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340661353351) 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, 1908313 + ... + 2514553.

It is an arithmetic number, because the mean of its divisors is an integer number (97350340360).

Almost surely, 2^{1340661353353} is an apocalyptic number.

It is an amenable number.

1340661353353 is a deficient number, since it is larger than the sum of its proper divisors (216944092407).

1340661353353 is an equidigital number, since it uses as much as digits as its factorization.

1340661353353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611488.

The product of its (nonzero) digits is 874800, while the sum is 43.

The spelling of 1340661353353 in words is "one trillion, three hundred forty billion, six hundred sixty-one million, three hundred fifty-three thousand, three hundred fifty-three".