1340433688441 has 3 divisors (see below), whose sum is σ = 1340434846213. Its totient is φ = 1340432530670.

The previous prime is 1340433688403. The next prime is 1340433688453. The reversal of 1340433688441 is 1448863340431.

The square root of 1340433688441 is 1157771.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1340433688441 - 2¹³ = 1340433680249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340433686441) 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 2 ways as a sum of consecutive naturals, for example, 578886 + ... + 1736656.

Almost surely, 2^{1340433688441} is an apocalyptic number.

1340433688441 is the 1157771-st square number.

1340433688441 is the 578886-th centered octagonal number.

It is an amenable number.

1340433688441 is a deficient number, since it is larger than the sum of its proper divisors (1157772).

1340433688441 is an frugal number, since it uses more digits than its factorization.

1340433688441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315542 (or 1157771 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 49.

Multiplying 1340433688441 by its sum of digits (49), we get a square (65681250733609 = 8104397²).

The spelling of 1340433688441 in words is "one trillion, three hundred forty billion, four hundred thirty-three million, six hundred eighty-eight thousand, four hundred forty-one".