1340040340444 has 12 divisors (see below), whose sum is σ = 2525460641704. Its totient is φ = 618480157104.

The previous prime is 1340040340439. The next prime is 1340040340447. The reversal of 1340040340444 is 4440430400431.

It is a super-2 number, since 2×1340040340444² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340040340447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12885003222 + ... + 12885003325.

Almost surely, 2^{1340040340444} is an apocalyptic number.

It is an amenable number.

1340040340444 is a deficient number, since it is larger than the sum of its proper divisors (1185420301260).

1340040340444 is a wasteful number, since it uses less digits than its factorization.

1340040340444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25770006564 (or 25770006562 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 1340040340444 its reverse (4440430400431), we get a palindrome (5780470740875).

The spelling of 1340040340444 in words is "one trillion, three hundred forty billion, forty million, three hundred forty thousand, four hundred forty-four".