20520410530 has 16 divisors (see below), whose sum is σ = 37935029880. Its totient is φ = 7986321792.

The previous prime is 20520410429. The next prime is 20520410531. The reversal of 20520410530 is 3501402502.

It can be written as a sum of positive squares in 4 ways, for example, as 20480758321 + 39652209 = 143111^2 + 6297^2 .

It is not an unprimeable number, because it can be changed into a prime (20520410531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27729915 + ... + 27730654.

Almost surely, 2^20520410530 is an apocalyptic number.

20520410530 is a deficient number, since it is larger than the sum of its proper divisors (17414619350).

20520410530 is a wasteful number, since it uses less digits than its factorization.

20520410530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55460613.

The product of its (nonzero) digits is 1200, while the sum is 22.

The spelling of 20520410530 in words is "twenty billion, five hundred twenty million, four hundred ten thousand, five hundred thirty".