21452143111053 has 4 divisors (see below), whose sum is σ = 28602857481408. Its totient is φ = 14301428740700.

The previous prime is 21452143111043. The next prime is 21452143111129. The reversal of 21452143111053 is 35011134125412.

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 21452143111053 - 2¹³ = 21452143102861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21452143111033) 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, 3575357185173 + ... + 3575357185178.

It is an arithmetic number, because the mean of its divisors is an integer number (7150714370352).

Almost surely, 2^{21452143111053} is an apocalyptic number.

It is an amenable number.

21452143111053 is a deficient number, since it is larger than the sum of its proper divisors (7150714370355).

21452143111053 is an equidigital number, since it uses as much as digits as its factorization.

21452143111053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7150714370354.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 21452143111053 its reverse (35011134125412), we get a palindrome (56463277236465).

The spelling of 21452143111053 in words is "twenty-one trillion, four hundred fifty-two billion, one hundred forty-three million, one hundred eleven thousand, fifty-three".