20353353145 has 8 divisors (see below), whose sum is σ = 24449287104. Its totient is φ = 16265840304.

The previous prime is 20353353107. The next prime is 20353353157. The reversal of 20353353145 is 54135335302.

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 20353353145 - 2¹⁷ = 20353222073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20353353145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2099959 + ... + 2109628.

It is an arithmetic number, because the mean of its divisors is an integer number (3056160888).

Almost surely, 2^20353353145 is an apocalyptic number.

It is an amenable number.

20353353145 is a deficient number, since it is larger than the sum of its proper divisors (4095933959).

20353353145 is an equidigital number, since it uses as much as digits as its factorization.

20353353145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210559.

The product of its (nonzero) digits is 81000, while the sum is 34.

Adding to 20353353145 its reverse (54135335302), we get a palindrome (74488688447).

The spelling of 20353353145 in words is "twenty billion, three hundred fifty-three million, three hundred fifty-three thousand, one hundred forty-five".