20566234422651 has 8 divisors (see below), whose sum is σ = 28059358592320. Its totient is φ = 13391966600712.

The previous prime is 20566234422619. The next prime is 20566234422677. The reversal of 20566234422651 is 15622443266502.

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

It is not a de Polignac number, because 20566234422651 - 2⁵ = 20566234422619 is a prime.

It is a super-2 number, since 2×20566234422651² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20566234422651.

It is not an unprimeable number, because it can be changed into a prime (20566234412651) 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, 79714086781 + ... + 79714087038.

It is an arithmetic number, because the mean of its divisors is an integer number (3507419824040).

Almost surely, 2^{20566234422651} is an apocalyptic number.

20566234422651 is a deficient number, since it is larger than the sum of its proper divisors (7493124169669).

20566234422651 is a wasteful number, since it uses less digits than its factorization.

20566234422651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159428173865.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 20566234422651 in words is "twenty trillion, five hundred sixty-six billion, two hundred thirty-four million, four hundred twenty-two thousand, six hundred fifty-one".