84187748736 has 1024 divisors, whose sum is σ = 328005888000. Its totient is φ = 20639121408.

The previous prime is 84187748719. The next prime is 84187748741. The reversal of 84187748736 is 63784778148.

84187748736 is a `hidden beast` number, since 8 + 41 + 87 + 7 + 487 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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, 436205856 + ... + 436206048.

It is an arithmetic number, because the mean of its divisors is an integer number (320318250).

Almost surely, 2^84187748736 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 84187748736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164002944000).

84187748736 is an abundant number, since it is smaller than the sum of its proper divisors (243818139264).

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

84187748736 is a wasteful number, since it uses less digits than its factorization.

84187748736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 310 counting only the distinct ones).

The product of its digits is 50577408, while the sum is 63.

The spelling of 84187748736 in words is "eighty-four billion, one hundred eighty-seven million, seven hundred forty-eight thousand, seven hundred thirty-six".