20344342451353 has 4 divisors (see below), whose sum is σ = 20647989353680. Its totient is φ = 20040695549028.

The previous prime is 20344342451341. The next prime is 20344342451393. The reversal of 20344342451353 is 35315424344302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20344342451353 - 2²⁵ = 20344308896921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344342451393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151823451063 + ... + 151823451196.

It is an arithmetic number, because the mean of its divisors is an integer number (5161997338420).

Almost surely, 2^{20344342451353} is an apocalyptic number.

It is an amenable number.

20344342451353 is a deficient number, since it is larger than the sum of its proper divisors (303646902327).

20344342451353 is an equidigital number, since it uses as much as digits as its factorization.

20344342451353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303646902326.

The product of its (nonzero) digits is 2073600, while the sum is 43.

Adding to 20344342451353 its reverse (35315424344302), we get a palindrome (55659766795655).

The spelling of 20344342451353 in words is "twenty trillion, three hundred forty-four billion, three hundred forty-two million, four hundred fifty-one thousand, three hundred fifty-three".