20340134441443 has 4 divisors (see below), whose sum is σ = 20500292980480. Its totient is φ = 20179975902408.

The previous prime is 20340134441383. The next prime is 20340134441467. The reversal of 20340134441443 is 34414443104302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20340134441443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340134447443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80079269328 + ... + 80079269581.

It is an arithmetic number, because the mean of its divisors is an integer number (5125073245120).

Almost surely, 2^{20340134441443} is an apocalyptic number.

20340134441443 is a deficient number, since it is larger than the sum of its proper divisors (160158539037).

20340134441443 is a wasteful number, since it uses less digits than its factorization.

20340134441443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160158539036.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 20340134441443 its reverse (34414443104302), we get a palindrome (54754577545745).

The spelling of 20340134441443 in words is "twenty trillion, three hundred forty billion, one hundred thirty-four million, four hundred forty-one thousand, four hundred forty-three".