23055543403421 has 4 divisors (see below), whose sum is σ = 23850562141500. Its totient is φ = 22260524665344.

The previous prime is 23055543403393. The next prime is 23055543403429. The reversal of 23055543403421 is 12430434555032.

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 19726797888196 + 3328745515225 = 4441486^2 + 1824485^2 .

It is a cyclic number.

It is not a de Polignac number, because 23055543403421 - 2³⁴ = 23038363534237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23055543403429) 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, 397509368996 + ... + 397509369053.

It is an arithmetic number, because the mean of its divisors is an integer number (5962640535375).

Almost surely, 2^{23055543403421} is an apocalyptic number.

It is an amenable number.

23055543403421 is a deficient number, since it is larger than the sum of its proper divisors (795018738079).

23055543403421 is an equidigital number, since it uses as much as digits as its factorization.

23055543403421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795018738078.

The product of its (nonzero) digits is 864000, while the sum is 41.

Adding to 23055543403421 its reverse (12430434555032), we get a palindrome (35485977958453).

The spelling of 23055543403421 in words is "twenty-three trillion, fifty-five billion, five hundred forty-three million, four hundred three thousand, four hundred twenty-one".