143220671644 has 12 divisors (see below), whose sum is σ = 252935590600. Its totient is φ = 70953360048.

The previous prime is 143220671639. The next prime is 143220671707. The reversal of 143220671644 is 446176022341.

It is a happy number.

143220671644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×143220671644³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143220671597 and 143220671606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164243454 + ... + 164244325.

Almost surely, 2^143220671644 is an apocalyptic number.

It is an amenable number.

143220671644 is a deficient number, since it is larger than the sum of its proper divisors (109714918956).

143220671644 is a wasteful number, since it uses less digits than its factorization.

143220671644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328487892 (or 328487890 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

Adding to 143220671644 its reverse (446176022341), we get a palindrome (589396693985).

The spelling of 143220671644 in words is "one hundred forty-three billion, two hundred twenty million, six hundred seventy-one thousand, six hundred forty-four".