353204421345 has 128 divisors (see below), whose sum is σ = 665855769600.
Its totient is φ = 177362325504.
The previous prime is 353204421343. The next prime is 353204421359. The reversal of 353204421345 is 543124402353.
Adding to 353204421345 its reverse (543124402353), we get a palindrome (896328823698).
It is not a de Polignac number, because 353204421345 - 21 = 353204421343 is a prime.
It is not an unprimeable number, because it can be changed into a prime (353204421343) by changing a digit.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 34646569 + ... + 34656761.
It is an arithmetic number, because the mean of its divisors is an integer number (5201998200).
Almost surely, 2353204421345 is an apocalyptic number.
It is an amenable number.
353204421345 is a deficient number, since it is larger than the sum of its proper divisors (312651348255).
353204421345 is a wasteful number, since it uses less digits than its factorization.
353204421345 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10456 (or 10450 counting only the distinct ones).
The product of its (nonzero) digits is 172800, while the sum is 36.
The spelling of 353204421345 in words is "three hundred fifty-three billion, two hundred four million, four hundred twenty-one thousand, three hundred forty-five".