68478144471 has 20 divisors (see below), whose sum is σ = 111594014664. Its totient is φ = 41501905200.

The previous prime is 68478144461. The next prime is 68478144523. The reversal of 68478144471 is 17444187486.

68478144471 is a `hidden beast` number, since 68 + 4 + 78 + 1 + 44 + 471 = 666.

It is not a de Polignac number, because 68478144471 - 2⁵ = 68478144439 is a prime.

It is a super-3 number, since 3×68478144471³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68478144461) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38426800 + ... + 38428581.

Almost surely, 2^68478144471 is an apocalyptic number.

68478144471 is a deficient number, since it is larger than the sum of its proper divisors (43115870193).

68478144471 is a wasteful number, since it uses less digits than its factorization.

68478144471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76855404 (or 76855395 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The spelling of 68478144471 in words is "sixty-eight billion, four hundred seventy-eight million, one hundred forty-four thousand, four hundred seventy-one".