85420800000 has 432 divisors, whose sum is σ = 308576890440. Its totient is φ = 22763520000.

The previous prime is 85420799999. The next prime is 85420800011. The reversal of 85420800000 is 802458.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57599259 + ... + 57600741.

Almost surely, 2^85420800000 is an apocalyptic number.

85420800000 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 85420800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154288445220).

85420800000 is an abundant number, since it is smaller than the sum of its proper divisors (223156090440).

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

85420800000 is an equidigital number, since it uses as much as digits as its factorization.

85420800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The spelling of 85420800000 in words is "eighty-five billion, four hundred twenty million, eight hundred thousand".