81033419348 has 96 divisors (see below), whose sum is σ = 167076000000. Its totient is φ = 34373087616.

The previous prime is 81033419347. The next prime is 81033419377. The reversal of 81033419348 is 84391433018.

It is a junction number, because it is equal to n+sod(n) for n = 81033419299 and 81033419308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81033419347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79521983 + ... + 79523001.

It is an arithmetic number, because the mean of its divisors is an integer number (1740375000).

Almost surely, 2^81033419348 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 81033419348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83538000000).

81033419348 is an abundant number, since it is smaller than the sum of its proper divisors (86042580652).

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

81033419348 is a wasteful number, since it uses less digits than its factorization.

81033419348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 81033419348 in words is "eighty-one billion, thirty-three million, four hundred nineteen thousand, three hundred forty-eight".