20650566667576 has 128 divisors (see below), whose sum is σ = 40632953788800. Its totient is φ = 9829585059840.

The previous prime is 20650566667553. The next prime is 20650566667657. The reversal of 20650566667576 is 67576666505602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3065243280 + ... + 3065250016.

It is an arithmetic number, because the mean of its divisors is an integer number (317444951475).

Almost surely, 2^{20650566667576} is an apocalyptic number.

It is an amenable number.

20650566667576 is a deficient number, since it is larger than the sum of its proper divisors (19982387121224).

20650566667576 is a wasteful number, since it uses less digits than its factorization.

20650566667576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7937 (or 7933 counting only the distinct ones).

The product of its (nonzero) digits is 571536000, while the sum is 67.

The spelling of 20650566667576 in words is "twenty trillion, six hundred fifty billion, five hundred sixty-six million, six hundred sixty-seven thousand, five hundred seventy-six".