81039483000 has 288 divisors, whose sum is σ = 318635750160. Its totient is φ = 18523209600.

The previous prime is 81039482959. The next prime is 81039483013. The reversal of 81039483000 is 38493018.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 349119 + ... + 532881.

Almost surely, 2^81039483000 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 81039483000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159317875080).

81039483000 is an abundant number, since it is smaller than the sum of its proper divisors (237596267160).

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

81039483000 is a wasteful number, since it uses less digits than its factorization.

81039483000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183804 (or 183780 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 81039483000 in words is "eighty-one billion, thirty-nine million, four hundred eighty-three thousand".