85278218808960 has 640 divisors, whose sum is σ = 316105831641600. Its totient is φ = 21885620428800.

The previous prime is 85278218808953. The next prime is 85278218808961. The reversal of 85278218808960 is 6980881287258.

85278218808960 is a `hidden beast` number, since 8 + 5 + 278 + 218 + 8 + 0 + 89 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

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

It is not an unprimeable number, because it can be changed into a prime (85278218808961) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 290727651 + ... + 291020829.

It is an arithmetic number, because the mean of its divisors is an integer number (493915361940).

Almost surely, 2^{85278218808960} is an apocalyptic number.

85278218808960 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85278218808960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158052915820800).

85278218808960 is an abundant number, since it is smaller than the sum of its proper divisors (230827612832640).

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

85278218808960 is a wasteful number, since it uses less digits than its factorization.

85278218808960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293422 (or 293401 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 72.

The spelling of 85278218808960 in words is "eighty-five trillion, two hundred seventy-eight billion, two hundred eighteen million, eight hundred eight thousand, nine hundred sixty".