81270847300 has 72 divisors (see below), whose sum is σ = 184100716800. Its totient is φ = 31082219520.

The previous prime is 81270847249. The next prime is 81270847363. The reversal of 81270847300 is 374807218.

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, 7168036 + ... + 7179364.

It is an arithmetic number, because the mean of its divisors is an integer number (2556954400).

Almost surely, 2^81270847300 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 81270847300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92050358400).

81270847300 is an abundant number, since it is smaller than the sum of its proper divisors (102829869500).

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

81270847300 is a wasteful number, since it uses less digits than its factorization.

81270847300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14485 (or 14478 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 81270847300 in words is "eighty-one billion, two hundred seventy million, eight hundred forty-seven thousand, three hundred".