53643143220 has 24 divisors (see below), whose sum is σ = 150200801184. Its totient is φ = 14304838176.

The previous prime is 53643143207. The next prime is 53643143249. The reversal of 53643143220 is 2234134635.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 447026134 + ... + 447026253.

It is an arithmetic number, because the mean of its divisors is an integer number (6258366716).

Almost surely, 2^53643143220 is an apocalyptic number.

It is an amenable number.

53643143220 is an abundant number, since it is smaller than the sum of its proper divisors (96557657964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53643143220 is a wasteful number, since it uses less digits than its factorization.

53643143220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894052399 (or 894052397 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 53643143220 its reverse (2234134635), we get a palindrome (55877277855).

The spelling of 53643143220 in words is "fifty-three billion, six hundred forty-three million, one hundred forty-three thousand, two hundred twenty".