85543435821740 has 144 divisors (see below), whose sum is σ = 196384061835360. Its totient is φ = 31283169914880.

The previous prime is 85543435821713. The next prime is 85543435821761. The reversal of 85543435821740 is 4712853434558.

It is a self number, because there is not a number n which added to its sum of digits gives 85543435821740.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1811531330 + ... + 1811578550.

It is an arithmetic number, because the mean of its divisors is an integer number (1363778207190).

Almost surely, 2^{85543435821740} 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 85543435821740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98192030917680).

85543435821740 is an abundant number, since it is smaller than the sum of its proper divisors (110840626013620).

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

85543435821740 is a wasteful number, since it uses less digits than its factorization.

85543435821740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52372 (or 52357 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 59.

The spelling of 85543435821740 in words is "eighty-five trillion, five hundred forty-three billion, four hundred thirty-five million, eight hundred twenty-one thousand, seven hundred forty".