20664262241 has 8 divisors (see below), whose sum is σ = 23622963840. Its totient is φ = 17707226688.

The previous prime is 20664262189. The next prime is 20664262261. The reversal of 20664262241 is 14226246602.

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 20664262241 - 2¹⁴ = 20664245857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20664262261) 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, 389816 + ... + 439641.

It is an arithmetic number, because the mean of its divisors is an integer number (2952870480).

Almost surely, 2^20664262241 is an apocalyptic number.

It is an amenable number.

20664262241 is a deficient number, since it is larger than the sum of its proper divisors (2958701599).

20664262241 is an equidigital number, since it uses as much as digits as its factorization.

20664262241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833023.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 20664262241 in words is "twenty billion, six hundred sixty-four million, two hundred sixty-two thousand, two hundred forty-one".