81083059200 has 1584 divisors, whose sum is σ = 359225508096. Its totient is φ = 17193369600.

The previous prime is 81083059199. The next prime is 81083059207. The reversal of 81083059200 is 295038018.

It is a tau number, because it is divible by the number of its divisors (1584).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (81083059207) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 757785547 + ... + 757785653.

Almost surely, 2^81083059200 is an apocalyptic number.

81083059200 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 81083059200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179612754048).

81083059200 is an abundant number, since it is smaller than the sum of its proper divisors (278142448896).

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

81083059200 is a wasteful number, since it uses less digits than its factorization.

81083059200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 81083059200 in words is "eighty-one billion, eighty-three million, fifty-nine thousand, two hundred".