353505200421 has 16 divisors (see below), whose sum is σ = 481418993664. Its totient is φ = 230631816624.

The previous prime is 353505200387. The next prime is 353505200441. The reversal of 353505200421 is 124002505353.

It is not a de Polignac number, because 353505200421 - 2⁶ = 353505200357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353505200441) 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 in 15 ways as a sum of consecutive naturals, for example, 1279576 + ... + 1531118.

It is an arithmetic number, because the mean of its divisors is an integer number (30088687104).

Almost surely, 2^353505200421 is an apocalyptic number.

It is an amenable number.

353505200421 is a deficient number, since it is larger than the sum of its proper divisors (127913793243).

353505200421 is a wasteful number, since it uses less digits than its factorization.

353505200421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261560.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 353505200421 its reverse (124002505353), we get a palindrome (477507705774).

The spelling of 353505200421 in words is "three hundred fifty-three billion, five hundred five million, two hundred thousand, four hundred twenty-one".