143643557121 has 8 divisors (see below), whose sum is σ = 191531114400. Its totient is φ = 95759185632.

The previous prime is 143643557087. The next prime is 143643557149. The reversal of 143643557121 is 121755346341.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143643557121 - 2⁷ = 143643556993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143643557821) 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 7 ways as a sum of consecutive naturals, for example, 689175 + ... + 873068.

It is an arithmetic number, because the mean of its divisors is an integer number (23941389300).

Almost surely, 2^143643557121 is an apocalyptic number.

It is an amenable number.

143643557121 is a deficient number, since it is larger than the sum of its proper divisors (47887557279).

143643557121 is a wasteful number, since it uses less digits than its factorization.

143643557121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592895.

The product of its digits is 302400, while the sum is 42.

The spelling of 143643557121 in words is "one hundred forty-three billion, six hundred forty-three million, five hundred fifty-seven thousand, one hundred twenty-one".