20555525124353 has 4 divisors (see below), whose sum is σ = 21637394867760. Its totient is φ = 19473655380948.

The previous prime is 20555525124311. The next prime is 20555525124361. The reversal of 20555525124353 is 35342152555502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20555525124353 - 2¹² = 20555525120257 is a prime.

It is a super-2 number, since 2×20555525124353² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20555525124298 and 20555525124307.

It is not an unprimeable number, because it can be changed into a prime (20555525120353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540934871675 + ... + 540934871712.

It is an arithmetic number, because the mean of its divisors is an integer number (5409348716940).

Almost surely, 2^{20555525124353} is an apocalyptic number.

It is an amenable number.

20555525124353 is a deficient number, since it is larger than the sum of its proper divisors (1081869743407).

20555525124353 is a wasteful number, since it uses less digits than its factorization.

20555525124353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081869743406.

The product of its (nonzero) digits is 4500000, while the sum is 47.

Adding to 20555525124353 its reverse (35342152555502), we get a palindrome (55897677679855).

The spelling of 20555525124353 in words is "twenty trillion, five hundred fifty-five billion, five hundred twenty-five million, one hundred twenty-four thousand, three hundred fifty-three".