85501371240 has 96 divisors (see below), whose sum is σ = 278218062720. Its totient is φ = 22772582784.

The previous prime is 85501371199. The next prime is 85501371247. The reversal of 85501371240 is 4217310558.

85501371240 is a `hidden beast` number, since 8 + 550 + 13 + 71 + 24 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 85501371195 and 85501371204.

It is not an unprimeable number, because it can be changed into a prime (85501371247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151989 + ... + 440571.

It is an arithmetic number, because the mean of its divisors is an integer number (2898104820).

Almost surely, 2^85501371240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85501371240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139109031360).

85501371240 is an abundant number, since it is smaller than the sum of its proper divisors (192716691480).

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

85501371240 is a wasteful number, since it uses less digits than its factorization.

85501371240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289423 (or 289416 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

Adding to 85501371240 its reverse (4217310558), we get a palindrome (89718681798).

The spelling of 85501371240 in words is "eighty-five billion, five hundred one million, three hundred seventy-one thousand, two hundred forty".