20345020016653 has 8 divisors (see below), whose sum is σ = 20730744520416. Its totient is φ = 19959364261200.

The previous prime is 20345020016647. The next prime is 20345020016669. The reversal of 20345020016653 is 35661002054302.

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 20345020016653 - 2⁵ = 20345020016621 is a prime.

It is a super-3 number, since 3×20345020016653³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345020016603) 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, 16589403 + ... + 17773528.

It is an arithmetic number, because the mean of its divisors is an integer number (2591343065052).

Almost surely, 2^{20345020016653} is an apocalyptic number.

It is an amenable number.

20345020016653 is a deficient number, since it is larger than the sum of its proper divisors (385724503763).

20345020016653 is a wasteful number, since it uses less digits than its factorization.

20345020016653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34374155.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 20345020016653 in words is "twenty trillion, three hundred forty-five billion, twenty million, sixteen thousand, six hundred fifty-three".