88081989840 has 640 divisors, whose sum is σ = 355372254720. Its totient is φ = 19850821632.

The previous prime is 88081989817. The next prime is 88081989887. The reversal of 88081989840 is 4898918088.

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, 17659827 + ... + 17664813.

It is an arithmetic number, because the mean of its divisors is an integer number (555269148).

Almost surely, 2^88081989840 is an apocalyptic number.

88081989840 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 88081989840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177686127360).

88081989840 is an abundant number, since it is smaller than the sum of its proper divisors (267290264880).

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

88081989840 is a wasteful number, since it uses less digits than its factorization.

88081989840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076 (or 5064 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 63.

The spelling of 88081989840 in words is "eighty-eight billion, eighty-one million, nine hundred eighty-nine thousand, eight hundred forty".