81075073282 has 32 divisors (see below), whose sum is σ = 141591187584. Its totient is φ = 34097760000.

The previous prime is 81075073279. The next prime is 81075073283. The reversal of 81075073282 is 28237057018.

It is not an unprimeable number, because it can be changed into a prime (81075073283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260157 + ... + 479407.

It is an arithmetic number, because the mean of its divisors is an integer number (4424724612).

Almost surely, 2^81075073282 is an apocalyptic number.

81075073282 is a deficient number, since it is larger than the sum of its proper divisors (60516114302).

81075073282 is a wasteful number, since it uses less digits than its factorization.

81075073282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219754.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 81075073282 in words is "eighty-one billion, seventy-five million, seventy-three thousand, two hundred eighty-two".