80985315040 has 192 divisors, whose sum is σ = 224251130880. Its totient is φ = 27065364480.

The previous prime is 80985315031. The next prime is 80985315041. The reversal of 80985315040 is 4051358908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80985315041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7071559 + ... + 7083001.

It is an arithmetic number, because the mean of its divisors is an integer number (1167974640).

Almost surely, 2^80985315040 is an apocalyptic number.

80985315040 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 80985315040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112125565440).

80985315040 is an abundant number, since it is smaller than the sum of its proper divisors (143265815840).

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

80985315040 is a wasteful number, since it uses less digits than its factorization.

80985315040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11625 (or 11617 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 80985315040 in words is "eighty billion, nine hundred eighty-five million, three hundred fifteen thousand, forty".