84427701720 has 192 divisors, whose sum is σ = 265384788480. Its totient is φ = 21485553408.

The previous prime is 84427701703. The next prime is 84427701727. The reversal of 84427701720 is 2710772448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84427701727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33198769 + ... + 33201311.

It is an arithmetic number, because the mean of its divisors is an integer number (1382212440).

Almost surely, 2^84427701720 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 84427701720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132692394240).

84427701720 is an abundant number, since it is smaller than the sum of its proper divisors (180957086760).

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

84427701720 is a wasteful number, since it uses less digits than its factorization.

84427701720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126 (or 3099 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 42.

The spelling of 84427701720 in words is "eighty-four billion, four hundred twenty-seven million, seven hundred one thousand, seven hundred twenty".