20664263006 has 4 divisors (see below), whose sum is σ = 30996394512. Its totient is φ = 10332131502.

The previous prime is 20664262987. The next prime is 20664263023. The reversal of 20664263006 is 60036246602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60036246602 = 2 ⋅30018123301.

It is a super-2 number, since 2×20664263006² (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 as a sum of consecutive naturals, namely, 5166065750 + ... + 5166065753.

It is an arithmetic number, because the mean of its divisors is an integer number (7749098628).

Almost surely, 2^20664263006 is an apocalyptic number.

20664263006 is a deficient number, since it is larger than the sum of its proper divisors (10332131506).

20664263006 is a wasteful number, since it uses less digits than its factorization.

20664263006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10332131505.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 20664263006 in words is "twenty billion, six hundred sixty-four million, two hundred sixty-three thousand, six".