84418785272640 has 896 divisors, whose sum is σ = 337738734305280. Its totient is φ = 17387713953792.

The previous prime is 84418785272537. The next prime is 84418785272677. The reversal of 84418785272640 is 4627258781448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8410753702 + ... + 8410763738.

It is an arithmetic number, because the mean of its divisors is an integer number (376940551680).

Almost surely, 2^{84418785272640} is an apocalyptic number.

84418785272640 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 84418785272640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168869367152640).

84418785272640 is an abundant number, since it is smaller than the sum of its proper divisors (253319949032640).

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

84418785272640 is a wasteful number, since it uses less digits than its factorization.

84418785272640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12359 (or 12349 counting only the distinct ones).

The product of its (nonzero) digits is 192675840, while the sum is 66.

The spelling of 84418785272640 in words is "eighty-four trillion, four hundred eighteen billion, seven hundred eighty-five million, two hundred seventy-two thousand, six hundred forty".