20609449606 has 16 divisors (see below), whose sum is σ = 32545719360. Its totient is φ = 9761025960.

The previous prime is 20609449603. The next prime is 20609449649. The reversal of 20609449606 is 60694490602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20609449603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276301 + ... + 342871.

It is an arithmetic number, because the mean of its divisors is an integer number (2034107460).

Almost surely, 2^20609449606 is an apocalyptic number.

20609449606 is a deficient number, since it is larger than the sum of its proper divisors (11936269754).

20609449606 is a wasteful number, since it uses less digits than its factorization.

20609449606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74739.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 20609449606 in words is "twenty billion, six hundred nine million, four hundred forty-nine thousand, six hundred six".