20004606806 has 4 divisors (see below), whose sum is σ = 30006910212. Its totient is φ = 10002303402.

The previous prime is 20004606781. The next prime is 20004606823. The reversal of 20004606806 is 60860640002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60860640002 = 2 ⋅30430320001.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001151700 + ... + 5001151703.

It is an arithmetic number, because the mean of its divisors is an integer number (7501727553).

Almost surely, 2^20004606806 is an apocalyptic number.

20004606806 is a deficient number, since it is larger than the sum of its proper divisors (10002303406).

20004606806 is a wasteful number, since it uses less digits than its factorization.

20004606806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10002303405.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 20004606806 in words is "twenty billion, four million, six hundred six thousand, eight hundred six".