23232054353521 has 4 divisors (see below), whose sum is σ = 25019135457652. Its totient is φ = 21444973249392.

The previous prime is 23232054353513. The next prime is 23232054353539. The reversal of 23232054353521 is 12535345023232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10794582531121 + 12437471822400 = 3285511^2 + 3526680^2 .

It is a cyclic number.

It is not a de Polignac number, because 23232054353521 - 2³ = 23232054353513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23232054353581) 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, 893540552046 + ... + 893540552071.

It is an arithmetic number, because the mean of its divisors is an integer number (6254783864413).

Almost surely, 2^{23232054353521} is an apocalyptic number.

It is an amenable number.

23232054353521 is a deficient number, since it is larger than the sum of its proper divisors (1787081104131).

23232054353521 is a wasteful number, since it uses less digits than its factorization.

23232054353521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787081104130.

The product of its (nonzero) digits is 648000, while the sum is 40.

Adding to 23232054353521 its reverse (12535345023232), we get a palindrome (35767399376753).

The spelling of 23232054353521 in words is "twenty-three trillion, two hundred thirty-two billion, fifty-four million, three hundred fifty-three thousand, five hundred twenty-one".