20520016630206 has 64 divisors (see below), whose sum is σ = 44243280076800. Its totient is φ = 6325348755456.

The previous prime is 20520016630177. The next prime is 20520016630271. The reversal of 20520016630206 is 60203661002502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11902846 + ... + 13517313.

It is an arithmetic number, because the mean of its divisors is an integer number (691301251200).

Almost surely, 2^{20520016630206} is an apocalyptic number.

20520016630206 is an abundant number, since it is smaller than the sum of its proper divisors (23723263446594).

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

20520016630206 is a wasteful number, since it uses less digits than its factorization.

20520016630206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25420353.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 20520016630206 its reverse (60203661002502), we get a palindrome (80723677632708).

The spelling of 20520016630206 in words is "twenty trillion, five hundred twenty billion, sixteen million, six hundred thirty thousand, two hundred six".