20466726210664 has 32 divisors (see below), whose sum is σ = 38417759075520. Its totient is φ = 10221995885056.

The previous prime is 20466726210661. The next prime is 20466726210719. The reversal of 20466726210664 is 46601262766402.

It is not an unprimeable number, because it can be changed into a prime (20466726210661) 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, 30016632 + ... + 30690904.

It is an arithmetic number, because the mean of its divisors is an integer number (1200554971110).

Almost surely, 2^{20466726210664} is an apocalyptic number.

It is an amenable number.

20466726210664 is a deficient number, since it is larger than the sum of its proper divisors (17951032864856).

20466726210664 is a wasteful number, since it uses less digits than its factorization.

20466726210664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678489 (or 678485 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 52.

The spelling of 20466726210664 in words is "twenty trillion, four hundred sixty-six billion, seven hundred twenty-six million, two hundred ten thousand, six hundred sixty-four".