20653033616656 has 40 divisors (see below), whose sum is σ = 45733884897600. Its totient is φ = 8850880585344.

The previous prime is 20653033616651. The next prime is 20653033616701. The reversal of 20653033616656 is 65661633035602.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20653033616651) 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, 1990906 + ... + 6728281.

It is an arithmetic number, because the mean of its divisors is an integer number (1143347122440).

Almost surely, 2^{20653033616656} is an apocalyptic number.

It is an amenable number.

20653033616656 is an abundant number, since it is smaller than the sum of its proper divisors (25080851280944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20653033616656 is a wasteful number, since it uses less digits than its factorization.

20653033616656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740351 (or 8740345 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 52.

The spelling of 20653033616656 in words is "twenty trillion, six hundred fifty-three billion, thirty-three million, six hundred sixteen thousand, six hundred fifty-six".