85481373219840 has 1408 divisors, whose sum is σ = 336625598373120. Its totient is φ = 20434513821696.

The previous prime is 85481373219817. The next prime is 85481373219857. The reversal of 85481373219840 is 4891237318458.

85481373219840 is a `hidden beast` number, since 8 + 5 + 4 + 8 + 1 + 373 + 219 + 8 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 52995270874 + ... + 52995272486.

Almost surely, 2^{85481373219840} is an apocalyptic number.

85481373219840 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 85481373219840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168312799186560).

85481373219840 is an abundant number, since it is smaller than the sum of its proper divisors (251144225153280).

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

85481373219840 is a wasteful number, since it uses less digits than its factorization.

85481373219840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2470 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 85481373219840 in words is "eighty-five trillion, four hundred eighty-one billion, three hundred seventy-three million, two hundred nineteen thousand, eight hundred forty".