81056682330 has 64 divisors (see below), whose sum is σ = 210586037760. Its totient is φ = 19849015296.

The previous prime is 81056682277. The next prime is 81056682341. The reversal of 81056682330 is 3328665018.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463170 + ... + 613709.

It is an arithmetic number, because the mean of its divisors is an integer number (3290406840).

Almost surely, 2^81056682330 is an apocalyptic number.

81056682330 is an abundant number, since it is smaller than the sum of its proper divisors (129529355430).

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

81056682330 is a wasteful number, since it uses less digits than its factorization.

81056682330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077095.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 81056682330 in words is "eighty-one billion, fifty-six million, six hundred eighty-two thousand, three hundred thirty".