20653332663 has 8 divisors (see below), whose sum is σ = 27540511488. Its totient is φ = 13767521144.

The previous prime is 20653332659. The next prime is 20653332683. The reversal of 20653332663 is 36623335602.

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

It is a cyclic number.

It is not a de Polignac number, because 20653332663 - 2² = 20653332659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20653332643) 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, 306045 + ... + 367382.

It is an arithmetic number, because the mean of its divisors is an integer number (3442563936).

Almost surely, 2^20653332663 is an apocalyptic number.

20653332663 is a deficient number, since it is larger than the sum of its proper divisors (6887178825).

20653332663 is a wasteful number, since it uses less digits than its factorization.

20653332663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683653.

The product of its (nonzero) digits is 349920, while the sum is 39.

The spelling of 20653332663 in words is "twenty billion, six hundred fifty-three million, three hundred thirty-two thousand, six hundred sixty-three".