84586780544 has 256 divisors, whose sum is σ = 207183052800. Its totient is φ = 33621073920.

The previous prime is 84586780543. The next prime is 84586780549. The reversal of 84586780544 is 44508768548.

It is a super-3 number, since 3×84586780544³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84586780543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139351889 + ... + 139352495.

It is an arithmetic number, because the mean of its divisors is an integer number (809308800).

Almost surely, 2^84586780544 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 84586780544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103591526400).

84586780544 is an abundant number, since it is smaller than the sum of its proper divisors (122596272256).

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

84586780544 is a wasteful number, since it uses less digits than its factorization.

84586780544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 59.

The spelling of 84586780544 in words is "eighty-four billion, five hundred eighty-six million, seven hundred eighty thousand, five hundred forty-four".