20723310806 has 8 divisors (see below), whose sum is σ = 33910872264. Its totient is φ = 9419686720.

The previous prime is 20723310793. The next prime is 20723310833. The reversal of 20723310806 is 60801332702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20723310806² (a number of 21 digits) contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 470984315 + ... + 470984358.

It is an arithmetic number, because the mean of its divisors is an integer number (4238859033).

Almost surely, 2^20723310806 is an apocalyptic number.

20723310806 is a deficient number, since it is larger than the sum of its proper divisors (13187561458).

20723310806 is a wasteful number, since it uses less digits than its factorization.

20723310806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941968686.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 20723310806 in words is "twenty billion, seven hundred twenty-three million, three hundred ten thousand, eight hundred six".