20664366333 has 24 divisors (see below), whose sum is σ = 30113853408. Its totient is φ = 12597653952.

The previous prime is 20664366329. The next prime is 20664366347. The reversal of 20664366333 is 33366346602.

It is not a de Polignac number, because 20664366333 - 2² = 20664366329 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20664362333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136210 + ... + 244707.

It is an arithmetic number, because the mean of its divisors is an integer number (1254743892).

Almost surely, 2^20664366333 is an apocalyptic number.

It is an amenable number.

20664366333 is a deficient number, since it is larger than the sum of its proper divisors (9449487075).

20664366333 is a wasteful number, since it uses less digits than its factorization.

20664366333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381053 (or 381040 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 42.

The spelling of 20664366333 in words is "twenty billion, six hundred sixty-four million, three hundred sixty-six thousand, three hundred thirty-three".