20346640616056 has 8 divisors (see below), whose sum is σ = 38149951155120. Its totient is φ = 10173320308024.

The previous prime is 20346640616033. The next prime is 20346640616083. The reversal of 20346640616056 is 65061604664302.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1271665038496 + ... + 1271665038511.

It is an arithmetic number, because the mean of its divisors is an integer number (4768743894390).

Almost surely, 2^{20346640616056} is an apocalyptic number.

It is an amenable number.

20346640616056 is a deficient number, since it is larger than the sum of its proper divisors (17803310539064).

20346640616056 is a wasteful number, since it uses less digits than its factorization.

20346640616056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543330077013 (or 2543330077009 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 20346640616056 in words is "twenty trillion, three hundred forty-six billion, six hundred forty million, six hundred sixteen thousand, fifty-six".