340243504644 has 96 divisors (see below), whose sum is σ = 865696706560. Its totient is φ = 103611312000.

The previous prime is 340243504571. The next prime is 340243504661. The reversal of 340243504644 is 446405342043.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1915194 + ... + 2085294.

Almost surely, 2^340243504644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340243504644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432848353280).

340243504644 is an abundant number, since it is smaller than the sum of its proper divisors (525453201916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340243504644 is a wasteful number, since it uses less digits than its factorization.

340243504644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170441 (or 170439 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 39.

Adding to 340243504644 its reverse (446405342043), we get a palindrome (786648846687).

The spelling of 340243504644 in words is "three hundred forty billion, two hundred forty-three million, five hundred four thousand, six hundred forty-four".