20650432205 has 16 divisors (see below), whose sum is σ = 26806402560. Its totient is φ = 15181155648.

The previous prime is 20650432189. The next prime is 20650432291. The reversal of 20650432205 is 50223405602.

It is a cyclic number.

It is not a de Polignac number, because 20650432205 - 2⁴ = 20650432189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697835 + ... + 726824.

It is an arithmetic number, because the mean of its divisors is an integer number (1675400160).

Almost surely, 2^20650432205 is an apocalyptic number.

It is an amenable number.

20650432205 is a deficient number, since it is larger than the sum of its proper divisors (6155970355).

20650432205 is a wasteful number, since it uses less digits than its factorization.

20650432205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424900.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20650432205 its reverse (50223405602), we get a palindrome (70873837807).

The spelling of 20650432205 in words is "twenty billion, six hundred fifty million, four hundred thirty-two thousand, two hundred five".