20664027572254 has 96 divisors (see below), whose sum is σ = 36981334803168. Its totient is φ = 8618232268800.

The previous prime is 20664027572249. The next prime is 20664027572257. The reversal of 20664027572254 is 45227572046602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20664027572257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 231544789 + ... + 231634015.

It is an arithmetic number, because the mean of its divisors is an integer number (385222237533).

Almost surely, 2^{20664027572254} is an apocalyptic number.

20664027572254 is a deficient number, since it is larger than the sum of its proper divisors (16317307230914).

20664027572254 is a wasteful number, since it uses less digits than its factorization.

20664027572254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90682 (or 90671 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 52.

The spelling of 20664027572254 in words is "twenty trillion, six hundred sixty-four billion, twenty-seven million, five hundred seventy-two thousand, two hundred fifty-four".