353020521304 has 64 divisors (see below), whose sum is σ = 726835472640. Its totient is φ = 159410232960.

The previous prime is 353020521299. The next prime is 353020521307. The reversal of 353020521304 is 403125020353.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353020521307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20802727 + ... + 20819689.

It is an arithmetic number, because the mean of its divisors is an integer number (11356804260).

Almost surely, 2^353020521304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 353020521304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363417736320).

353020521304 is an abundant number, since it is smaller than the sum of its proper divisors (373814951336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

353020521304 is a wasteful number, since it uses less digits than its factorization.

353020521304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18520 (or 18516 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 353020521304 its reverse (403125020353), we get a palindrome (756145541657).

The spelling of 353020521304 in words is "three hundred fifty-three billion, twenty million, five hundred twenty-one thousand, three hundred four".