53143324442 has 16 divisors (see below), whose sum is σ = 88167097032. Its totient is φ = 23864777280.

The previous prime is 53143324393. The next prime is 53143324447. The reversal of 53143324442 is 24442334135.

It can be written as a sum of positive squares in 4 ways, for example, as 52895860081 + 247464361 = 229991^2 + 15731^2 .

It is a super-2 number, since 2×53143324442² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53143324447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27620309 + ... + 27622232.

Almost surely, 2^53143324442 is an apocalyptic number.

53143324442 is a deficient number, since it is larger than the sum of its proper divisors (35023772590).

53143324442 is a wasteful number, since it uses less digits than its factorization.

53143324442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55242593.

The product of its digits is 138240, while the sum is 35.

Adding to 53143324442 its reverse (24442334135), we get a palindrome (77585658577).

The spelling of 53143324442 in words is "fifty-three billion, one hundred forty-three million, three hundred twenty-four thousand, four hundred forty-two".