20352320431455 has 16 divisors (see below), whose sum is σ = 32564207388384. Its totient is φ = 10854405997440.

The previous prime is 20352320431439. The next prime is 20352320431459. The reversal of 20352320431455 is 55413402325302.

It is not a de Polignac number, because 20352320431455 - 2⁴ = 20352320431439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352320431459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9282636 + ... + 11263745.

It is an arithmetic number, because the mean of its divisors is an integer number (2035262961774).

Almost surely, 2^{20352320431455} is an apocalyptic number.

20352320431455 is a deficient number, since it is larger than the sum of its proper divisors (12211886956929).

20352320431455 is a wasteful number, since it uses less digits than its factorization.

20352320431455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20612426.

The product of its (nonzero) digits is 432000, while the sum is 39.

Adding to 20352320431455 its reverse (55413402325302), we get a palindrome (75765722756757).

The spelling of 20352320431455 in words is "twenty trillion, three hundred fifty-two billion, three hundred twenty million, four hundred thirty-one thousand, four hundred fifty-five".