85638960000 has 720 divisors, whose sum is σ = 338829571080. Its totient is φ = 20739840000.

The previous prime is 85638959983. The next prime is 85638960037. The reversal of 85638960000 is 6983658.

85638960000 is a `hidden beast` number, since 8 + 5 + 6 + 38 + 9 + 600 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 87119509 + ... + 87120491.

Almost surely, 2^85638960000 is an apocalyptic number.

85638960000 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 85638960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169414785540).

85638960000 is an abundant number, since it is smaller than the sum of its proper divisors (253190611080).

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

85638960000 is a wasteful number, since it uses less digits than its factorization.

85638960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 85638960000 in words is "eighty-five billion, six hundred thirty-eight million, nine hundred sixty thousand".