20520454300352 has 28 divisors (see below), whose sum is σ = 40721172122136. Its totient is φ = 10260001482240.

The previous prime is 20520454300337. The next prime is 20520454300361. The reversal of 20520454300352 is 25300345402502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574349 + ... + 6432012.

Almost surely, 2^{20520454300352} is an apocalyptic number.

It is an amenable number.

20520454300352 is a deficient number, since it is larger than the sum of its proper divisors (20200717821784).

20520454300352 is an equidigital number, since it uses as much as digits as its factorization.

20520454300352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7052136 (or 7052126 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 20520454300352 its reverse (25300345402502), we get a palindrome (45820799702854).

The spelling of 20520454300352 in words is "twenty trillion, five hundred twenty billion, four hundred fifty-four million, three hundred thousand, three hundred fifty-two".