84890380008 has 128 divisors (see below), whose sum is σ = 244861056000. Its totient is φ = 24023400960.

The previous prime is 84890379979. The next prime is 84890380009. The reversal of 84890380008 is 80008309848.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (84890380009) 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, 12519163 + ... + 12525941.

It is an arithmetic number, because the mean of its divisors is an integer number (1912977000).

Almost surely, 2^84890380008 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 84890380008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122430528000).

84890380008 is an abundant number, since it is smaller than the sum of its proper divisors (159970675992).

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

84890380008 is a wasteful number, since it uses less digits than its factorization.

84890380008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7495 (or 7491 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 84890380008 in words is "eighty-four billion, eight hundred ninety million, three hundred eighty thousand, eight".