20565642622 has 8 divisors (see below), whose sum is σ = 35255387376. Its totient is φ = 8813846832.

The previous prime is 20565642613. The next prime is 20565642661. The reversal of 20565642622 is 22624656502.

It is a happy number.

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

It is a congruent number.

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, 734487223 + ... + 734487250.

It is an arithmetic number, because the mean of its divisors is an integer number (4406923422).

Almost surely, 2^20565642622 is an apocalyptic number.

20565642622 is a deficient number, since it is larger than the sum of its proper divisors (14689744754).

20565642622 is a wasteful number, since it uses less digits than its factorization.

20565642622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468974482.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 20565642622 in words is "twenty billion, five hundred sixty-five million, six hundred forty-two thousand, six hundred twenty-two".