20344331641351 has 4 divisors (see below), whose sum is σ = 20344992138072. Its totient is φ = 20343671144632.

The previous prime is 20344331641331. The next prime is 20344331641357. The reversal of 20344331641351 is 15314613344302.

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

It is a cyclic number.

It is not a de Polignac number, because 20344331641351 - 2⁴³ = 11548238619143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344331641357) 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, 330202156 + ... + 330263761.

It is an arithmetic number, because the mean of its divisors is an integer number (5086248034518).

Almost surely, 2^{20344331641351} is an apocalyptic number.

20344331641351 is a deficient number, since it is larger than the sum of its proper divisors (660496721).

20344331641351 is an equidigital number, since it uses as much as digits as its factorization.

20344331641351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660496720.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 20344331641351 its reverse (15314613344302), we get a palindrome (35658944985653).

The spelling of 20344331641351 in words is "twenty trillion, three hundred forty-four billion, three hundred thirty-one million, six hundred forty-one thousand, three hundred fifty-one".