143678197989 has 24 divisors (see below), whose sum is σ = 210406577472. Its totient is φ = 94460558400.

The previous prime is 143678197981. The next prime is 143678198029. The reversal of 143678197989 is 989791876341.

143678197989 is a `hidden beast` number, since 14 + 367 + 81 + 97 + 98 + 9 = 666.

143678197989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 143678197989 - 2³ = 143678197981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143678197981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9602464 + ... + 9617414.

It is an arithmetic number, because the mean of its divisors is an integer number (8766940728).

Almost surely, 2^143678197989 is an apocalyptic number.

It is an amenable number.

143678197989 is a deficient number, since it is larger than the sum of its proper divisors (66728379483).

143678197989 is a wasteful number, since it uses less digits than its factorization.

143678197989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29657 (or 29654 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 72.

The spelling of 143678197989 in words is "one hundred forty-three billion, six hundred seventy-eight million, one hundred ninety-seven thousand, nine hundred eighty-nine".