20522351206 has 24 divisors (see below), whose sum is σ = 35816531400. Its totient is φ = 8793544032.

The previous prime is 20522351189. The next prime is 20522351221. The reversal of 20522351206 is 60215322502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555301 + ... + 591103.

It is an arithmetic number, because the mean of its divisors is an integer number (1492355475).

Almost surely, 2^20522351206 is an apocalyptic number.

20522351206 is a deficient number, since it is larger than the sum of its proper divisors (15294180194).

20522351206 is a wasteful number, since it uses less digits than its factorization.

20522351206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41668 (or 41661 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20522351206 its reverse (60215322502), we get a palindrome (80737673708).

The spelling of 20522351206 in words is "twenty billion, five hundred twenty-two million, three hundred fifty-one thousand, two hundred six".