85990410240 has 384 divisors, whose sum is σ = 325267488000. Its totient is φ = 18975817728.

The previous prime is 85990410221. The next prime is 85990410241. The reversal of 85990410240 is 4201409958.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 85990410192 and 85990410201.

It is not an unprimeable number, because it can be changed into a prime (85990410241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6229266 + ... + 6243054.

It is an arithmetic number, because the mean of its divisors is an integer number (847050750).

Almost surely, 2^85990410240 is an apocalyptic number.

85990410240 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 85990410240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162633744000).

85990410240 is an abundant number, since it is smaller than the sum of its proper divisors (239277077760).

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

85990410240 is a wasteful number, since it uses less digits than its factorization.

85990410240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13855 (or 13835 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 85990410240 in words is "eighty-five billion, nine hundred ninety million, four hundred ten thousand, two hundred forty".