20351314221443 has 8 divisors (see below), whose sum is σ = 21005151034560. Its totient is φ = 19707774051240.

The previous prime is 20351314221439. The next prime is 20351314221467. The reversal of 20351314221443 is 34412241315302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20351314221443 - 2² = 20351314221439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20351314121443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2574156713 + ... + 2574164618.

It is an arithmetic number, because the mean of its divisors is an integer number (2625643879320).

Almost surely, 2^{20351314221443} is an apocalyptic number.

20351314221443 is a deficient number, since it is larger than the sum of its proper divisors (653836813117).

20351314221443 is an equidigital number, since it uses as much as digits as its factorization.

20351314221443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148321457.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 20351314221443 its reverse (34412241315302), we get a palindrome (54763555536745).

The spelling of 20351314221443 in words is "twenty trillion, three hundred fifty-one billion, three hundred fourteen million, two hundred twenty-one thousand, four hundred forty-three".