20623643176 has 16 divisors (see below), whose sum is σ = 40704559200. Its totient is φ = 9769094064.

The previous prime is 20623643153. The next prime is 20623643321. The reversal of 20623643176 is 67134632602.

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, 67840780 + ... + 67841083.

It is an arithmetic number, because the mean of its divisors is an integer number (2544034950).

Almost surely, 2^20623643176 is an apocalyptic number.

It is an amenable number.

20623643176 is a deficient number, since it is larger than the sum of its proper divisors (20080916024).

20623643176 is a wasteful number, since it uses less digits than its factorization.

20623643176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135681888 (or 135681884 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 20623643176 in words is "twenty billion, six hundred twenty-three million, six hundred forty-three thousand, one hundred seventy-six".