143671806493 has 4 divisors (see below), whose sum is σ = 148306380928. Its totient is φ = 139037232060.

The previous prime is 143671806491. The next prime is 143671806497. The reversal of 143671806493 is 394608176341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 394608176341 = 31 ⋅12729296011.

It is a cyclic number.

It is not a de Polignac number, because 143671806493 - 2¹ = 143671806491 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 143671806493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143671806491) 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 3 ways as a sum of consecutive naturals, for example, 2317287171 + ... + 2317287232.

It is an arithmetic number, because the mean of its divisors is an integer number (37076595232).

Almost surely, 2^143671806493 is an apocalyptic number.

It is an amenable number.

143671806493 is a deficient number, since it is larger than the sum of its proper divisors (4634574435).

143671806493 is an equidigital number, since it uses as much as digits as its factorization.

143671806493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634574434.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 143671806493 in words is "one hundred forty-three billion, six hundred seventy-one million, eight hundred six thousand, four hundred ninety-three".