20353443053215 has 4 divisors (see below), whose sum is σ = 24424131663864. Its totient is φ = 16282754442568.

The previous prime is 20353443053159. The next prime is 20353443053221. The reversal of 20353443053215 is 51235034435302.

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 20353443053215 - 2¹⁷ = 20353442922143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035344305317 + ... + 2035344305326.

It is an arithmetic number, because the mean of its divisors is an integer number (6106032915966).

Almost surely, 2^{20353443053215} is an apocalyptic number.

20353443053215 is a deficient number, since it is larger than the sum of its proper divisors (4070688610649).

20353443053215 is an equidigital number, since it uses as much as digits as its factorization.

20353443053215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070688610648.

The product of its (nonzero) digits is 648000, while the sum is 40.

Adding to 20353443053215 its reverse (51235034435302), we get a palindrome (71588477488517).

The spelling of 20353443053215 in words is "twenty trillion, three hundred fifty-three billion, four hundred forty-three million, fifty-three thousand, two hundred fifteen".