84415371880 has 128 divisors (see below), whose sum is σ = 228028608000. Its totient is φ = 27497935872.

The previous prime is 84415371847. The next prime is 84415371881. The reversal of 84415371880 is 8817351448.

It is not an unprimeable number, because it can be changed into a prime (84415371881) 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, 915574 + ... + 1003546.

It is an arithmetic number, because the mean of its divisors is an integer number (1781473500).

Almost surely, 2^84415371880 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 84415371880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114014304000).

84415371880 is an abundant number, since it is smaller than the sum of its proper divisors (143613236120).

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

84415371880 is a wasteful number, since it uses less digits than its factorization.

84415371880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88163 (or 88159 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 84415371880 in words is "eighty-four billion, four hundred fifteen million, three hundred seventy-one thousand, eight hundred eighty".