144471021686 has 8 divisors (see below), whose sum is σ = 221746219464. Its totient is φ = 70555615200.

The previous prime is 144471021661. The next prime is 144471021691. The reversal of 144471021686 is 686120174441.

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

It is a super-2 number, since 2×144471021686² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 839947715 + ... + 839947886.

It is an arithmetic number, because the mean of its divisors is an integer number (27718277433).

Almost surely, 2^144471021686 is an apocalyptic number.

144471021686 is a deficient number, since it is larger than the sum of its proper divisors (77275197778).

144471021686 is a wasteful number, since it uses less digits than its factorization.

144471021686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679895646.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 144471021686 in words is "one hundred forty-four billion, four hundred seventy-one million, twenty-one thousand, six hundred eighty-six".