20658023066 has 4 divisors (see below), whose sum is σ = 30987034602. Its totient is φ = 10329011532.

The previous prime is 20658023053. The next prime is 20658023119. The reversal of 20658023066 is 66032085602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20371567441 + 286455625 = 142729^2 + 16925^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5164505765 + ... + 5164505768.

Almost surely, 2^20658023066 is an apocalyptic number.

20658023066 is a deficient number, since it is larger than the sum of its proper divisors (10329011536).

20658023066 is a wasteful number, since it uses less digits than its factorization.

20658023066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10329011535.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 20658023066 in words is "twenty billion, six hundred fifty-eight million, twenty-three thousand, sixty-six".