20328906693 has 8 divisors (see below), whose sum is σ = 27218620800. Its totient is φ = 13495898528.

The previous prime is 20328906641. The next prime is 20328906709. The reversal of 20328906693 is 39660982302.

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

It is a cyclic number.

It is not a de Polignac number, because 20328906693 - 2¹⁰ = 20328905669 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20328906623) 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, 14175648 + ... + 14177081.

It is an arithmetic number, because the mean of its divisors is an integer number (3402327600).

Almost surely, 2^20328906693 is an apocalyptic number.

It is an amenable number.

20328906693 is a deficient number, since it is larger than the sum of its proper divisors (6889714107).

20328906693 is a wasteful number, since it uses less digits than its factorization.

20328906693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28352971.

The product of its (nonzero) digits is 839808, while the sum is 48.

The spelling of 20328906693 in words is "twenty billion, three hundred twenty-eight million, nine hundred six thousand, six hundred ninety-three".