20353451579 has 2 divisors, whose sum is σ = 20353451580. Its totient is φ = 20353451578.

The previous prime is 20353451539. The next prime is 20353451627. The reversal of 20353451579 is 97515435302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20353451579 - 2³² = 16058484283 is a prime.

It is not a weakly prime, because it can be changed into another prime (20353451519) 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 as a sum of consecutive naturals, namely, 10176725789 + 10176725790.

It is an arithmetic number, because the mean of its divisors is an integer number (10176725790).

Almost surely, 2^20353451579 is an apocalyptic number.

20353451579 is a deficient number, since it is larger than the sum of its proper divisors (1).

20353451579 is an equidigital number, since it uses as much as digits as its factorization.

20353451579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567000, while the sum is 44.

The spelling of 20353451579 in words is "twenty billion, three hundred fifty-three million, four hundred fifty-one thousand, five hundred seventy-nine".