85161216000 has 1152 divisors, whose sum is σ = 344901473280. Its totient is φ = 18579456000.

The previous prime is 85161215999. The next prime is 85161216067. The reversal of 85161216000 is 61216158.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1166591964 + ... + 1166592036.

It is an arithmetic number, because the mean of its divisors is an integer number (299393640).

Almost surely, 2^85161216000 is an apocalyptic number.

85161216000 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 85161216000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172450736640).

85161216000 is an abundant number, since it is smaller than the sum of its proper divisors (259740257280).

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

85161216000 is a wasteful number, since it uses less digits than its factorization.

85161216000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 85161216000 in words is "eighty-five billion, one hundred sixty-one million, two hundred sixteen thousand".