143666103221143 has 4 divisors (see below), whose sum is σ = 143669481019848. Its totient is φ = 143662725422440.

The previous prime is 143666103221101. The next prime is 143666103221153. The reversal of 143666103221143 is 341122301666341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143666103221143 - 2²¹ = 143666101123991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143666103221143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143666103221153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688835553 + ... + 1688920618.

It is an arithmetic number, because the mean of its divisors is an integer number (35917370254962).

Almost surely, 2^{143666103221143} is an apocalyptic number.

143666103221143 is a deficient number, since it is larger than the sum of its proper divisors (3377798705).

143666103221143 is an equidigital number, since it uses as much as digits as its factorization.

143666103221143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377798704.

The product of its (nonzero) digits is 373248, while the sum is 43.

Adding to 143666103221143 its reverse (341122301666341), we get a palindrome (484788404887484).

The spelling of 143666103221143 in words is "one hundred forty-three trillion, six hundred sixty-six billion, one hundred three million, two hundred twenty-one thousand, one hundred forty-three".