20664262254 has 8 divisors (see below), whose sum is σ = 41328524520. Its totient is φ = 6888087416.

The previous prime is 20664262189. The next prime is 20664262261. The reversal of 20664262254 is 45226246602.

It is a sphenic number, since it is the product of 3 distinct primes.

20664262254 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722021849 + ... + 1722021860.

It is an arithmetic number, because the mean of its divisors is an integer number (5166065565).

Almost surely, 2^20664262254 is an apocalyptic number.

20664262254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20664262254 is a wasteful number, since it uses less digits than its factorization.

20664262254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444043714.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 20664262254 in words is "twenty billion, six hundred sixty-four million, two hundred sixty-two thousand, two hundred fifty-four".