20566668001 has 8 divisors (see below), whose sum is σ = 22443369408. Its totient is φ = 18691134000.

The previous prime is 20566667981. The next prime is 20566668013. The reversal of 20566668001 is 10086666502.

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

It is not a de Polignac number, because 20566668001 - 2⁵ = 20566667969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20566668061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254805 + ... + 325666.

It is an arithmetic number, because the mean of its divisors is an integer number (2805421176).

Almost surely, 2^20566668001 is an apocalyptic number.

It is an amenable number.

20566668001 is a deficient number, since it is larger than the sum of its proper divisors (1876701407).

20566668001 is a wasteful number, since it uses less digits than its factorization.

20566668001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583703.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 20566668001 in words is "twenty billion, five hundred sixty-six million, six hundred sixty-eight thousand, one".