478135065984 has 128 divisors (see below), whose sum is σ = 1289332028160. Its totient is φ = 156963072000.

The previous prime is 478135065979. The next prime is 478135066021. The reversal of 478135065984 is 489560531874.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×478135065984² (a number of 24 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 15 ways as a sum of consecutive naturals, for example, 26464314 + ... + 26482374.

It is an arithmetic number, because the mean of its divisors is an integer number (10072906470).

Almost surely, 2^478135065984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478135065984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644666014080).

478135065984 is an abundant number, since it is smaller than the sum of its proper divisors (811196962176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478135065984 is a wasteful number, since it uses less digits than its factorization.

478135065984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19120 (or 19108 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 478135065984 in words is "four hundred seventy-eight billion, one hundred thirty-five million, sixty-five thousand, nine hundred eighty-four".