20315305422653 has 8 divisors (see below), whose sum is σ = 21198709845888. Its totient is φ = 19431911855664.

The previous prime is 20315305422649. The next prime is 20315305422679. The reversal of 20315305422653 is 35622450351302.

It is a happy number.

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 20315305422653 - 2² = 20315305422649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20315305422653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315305422353) 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, 1232000 + ... + 6492182.

It is an arithmetic number, because the mean of its divisors is an integer number (2649838730736).

Almost surely, 2^{20315305422653} is an apocalyptic number.

20315305422653 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20315305422653 is a deficient number, since it is larger than the sum of its proper divisors (883404423235).

20315305422653 is a wasteful number, since it uses less digits than its factorization.

20315305422653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428123.

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 20315305422653 its reverse (35622450351302), we get a palindrome (55937755773955).

The spelling of 20315305422653 in words is "twenty trillion, three hundred fifteen billion, three hundred five million, four hundred twenty-two thousand, six hundred fifty-three".