20662666226 has 8 divisors (see below), whose sum is σ = 31048281264. Its totient is φ = 10313239140.

The previous prime is 20662666217. The next prime is 20662666253. The reversal of 20662666226 is 62266626602.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9045560 + ... + 9047843.

It is an arithmetic number, because the mean of its divisors is an integer number (3881035158).

Almost surely, 2^20662666226 is an apocalyptic number.

20662666226 is a deficient number, since it is larger than the sum of its proper divisors (10385615038).

20662666226 is a wasteful number, since it uses less digits than its factorization.

20662666226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18093976.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 20662666226 in words is "twenty billion, six hundred sixty-two million, six hundred sixty-six thousand, two hundred twenty-six".