20530403353 has 8 divisors (see below), whose sum is σ = 20919902400. Its totient is φ = 20140983408.

The previous prime is 20530403303. The next prime is 20530403423. The reversal of 20530403353 is 35330403502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20530403353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20530403303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949618 + ... + 970996.

It is an arithmetic number, because the mean of its divisors is an integer number (2614987800).

Almost surely, 2^20530403353 is an apocalyptic number.

It is an amenable number.

20530403353 is a deficient number, since it is larger than the sum of its proper divisors (389499047).

20530403353 is a wasteful number, since it uses less digits than its factorization.

20530403353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39551.

The product of its (nonzero) digits is 16200, while the sum is 28.

Adding to 20530403353 its reverse (35330403502), we get a palindrome (55860806855).

The spelling of 20530403353 in words is "twenty billion, five hundred thirty million, four hundred three thousand, three hundred fifty-three".