21452323423401 has 32 divisors (see below), whose sum is σ = 34352224202240. Its totient is φ = 13152715977600.

The previous prime is 21452323423387. The next prime is 21452323423423. The reversal of 21452323423401 is 10432432325412.

21452323423401 is a `hidden beast` number, since 2 + 1 + 45 + 232 + 3 + 42 + 340 + 1 = 666.

It is not a de Polignac number, because 21452323423401 - 2¹⁰ = 21452323422377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21452323423481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112668220 + ... + 112858461.

It is an arithmetic number, because the mean of its divisors is an integer number (1073507006320).

Almost surely, 2^{21452323423401} is an apocalyptic number.

It is an amenable number.

21452323423401 is a deficient number, since it is larger than the sum of its proper divisors (12899900778839).

21452323423401 is a wasteful number, since it uses less digits than its factorization.

21452323423401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225526974 (or 225526968 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 21452323423401 its reverse (10432432325412), we get a palindrome (31884755748813).

The spelling of 21452323423401 in words is "twenty-one trillion, four hundred fifty-two billion, three hundred twenty-three million, four hundred twenty-three thousand, four hundred one".