353020441621 has 4 divisors (see below), whose sum is σ = 353023838272. Its totient is φ = 353017044972.

The previous prime is 353020441601. The next prime is 353020441651. The reversal of 353020441621 is 126144020353.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 353020441621 - 2⁷ = 353020441493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353020441601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537341 + ... + 1751986.

It is an arithmetic number, because the mean of its divisors is an integer number (88255959568).

Almost surely, 2^353020441621 is an apocalyptic number.

It is an amenable number.

353020441621 is a deficient number, since it is larger than the sum of its proper divisors (3396651).

353020441621 is a wasteful number, since it uses less digits than its factorization.

353020441621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396650.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 353020441621 its reverse (126144020353), we get a palindrome (479164461974).

The spelling of 353020441621 in words is "three hundred fifty-three billion, twenty million, four hundred forty-one thousand, six hundred twenty-one".