78064539170688 has 896 divisors, whose sum is σ = 281985018163200. Its totient is φ = 21018983362560.

The previous prime is 78064539170617. The next prime is 78064539170689. The reversal of 78064539170688 is 88607193546087.

78064539170688 is a `hidden beast` number, since 7 + 8 + 0 + 6 + 4 + 539 + 1 + 7 + 0 + 6 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (896).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78064539170689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 2370388270 + ... + 2370421202.

Almost surely, 2^{78064539170688} 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 78064539170688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140992509081600).

78064539170688 is an abundant number, since it is smaller than the sum of its proper divisors (203920478992512).

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

78064539170688 is a wasteful number, since it uses less digits than its factorization.

78064539170688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33182 (or 33155 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 72.

The spelling of 78064539170688 in words is "seventy-eight trillion, sixty-four billion, five hundred thirty-nine million, one hundred seventy thousand, six hundred eighty-eight".