21552433030143 has 24 divisors (see below), whose sum is σ = 32436474142800. Its totient is φ = 13773025897344.

The previous prime is 21552433030123. The next prime is 21552433030189. The reversal of 21552433030143 is 34103033425512.

21552433030143 is a `hidden beast` number, since 2 + 1 + 5 + 52 + 433 + 0 + 30 + 143 = 666.

It is not a de Polignac number, because 21552433030143 - 2²⁶ = 21552365921279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21552433030098 and 21552433030107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21552433030103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297001030 + ... + 297073587.

It is an arithmetic number, because the mean of its divisors is an integer number (1351519755950).

Almost surely, 2^{21552433030143} is an apocalyptic number.

21552433030143 is a deficient number, since it is larger than the sum of its proper divisors (10884041112657).

21552433030143 is a wasteful number, since it uses less digits than its factorization.

21552433030143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594074791 (or 594074788 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 21552433030143 its reverse (34103033425512), we get a palindrome (55655466455655).

The spelling of 21552433030143 in words is "twenty-one trillion, five hundred fifty-two billion, four hundred thirty-three million, thirty thousand, one hundred forty-three".