84716643440 has 160 divisors (see below), whose sum is σ = 232269508800. Its totient is φ = 28329615360.

The previous prime is 84716643437. The next prime is 84716643461. The reversal of 84716643440 is 4434661748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3063596 + ... + 3091124.

It is an arithmetic number, because the mean of its divisors is an integer number (1451684430).

Almost surely, 2^84716643440 is an apocalyptic number.

84716643440 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 84716643440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116134754400).

84716643440 is an abundant number, since it is smaller than the sum of its proper divisors (147552865360).

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

84716643440 is a wasteful number, since it uses less digits than its factorization.

84716643440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27835 (or 27829 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 47.

The spelling of 84716643440 in words is "eighty-four billion, seven hundred sixteen million, six hundred forty-three thousand, four hundred forty".