20424552566 has 16 divisors (see below), whose sum is σ = 33646309200. Its totient is φ = 9221578080.

The previous prime is 20424552541. The next prime is 20424552637. The reversal of 20424552566 is 66525542402.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3112121 + ... + 3118676.

It is an arithmetic number, because the mean of its divisors is an integer number (2102894325).

Almost surely, 2^20424552566 is an apocalyptic number.

20424552566 is a deficient number, since it is larger than the sum of its proper divisors (13221756634).

20424552566 is a wasteful number, since it uses less digits than its factorization.

20424552566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6230959.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 20424552566 in words is "twenty billion, four hundred twenty-four million, five hundred fifty-two thousand, five hundred sixty-six".