81035776300 has 72 divisors (see below), whose sum is σ = 181666150400. Its totient is φ = 31343457600.

The previous prime is 81035776259. The next prime is 81035776337. The reversal of 81035776300 is 367753018.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4103851 + ... + 4123549.

Almost surely, 2^81035776300 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 81035776300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90833075200).

81035776300 is an abundant number, since it is smaller than the sum of its proper divisors (100630374100).

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

81035776300 is a wasteful number, since it uses less digits than its factorization.

81035776300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21071 (or 21064 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 81035776300 in words is "eighty-one billion, thirty-five million, seven hundred seventy-six thousand, three hundred".