81930050682 has 16 divisors (see below), whose sum is σ = 173498931072. Its totient is φ = 25703545280.

The previous prime is 81930050647. The next prime is 81930050687. The reversal of 81930050682 is 28605003918.

It is not an unprimeable number, because it can be changed into a prime (81930050687) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 401617794 + ... + 401617997.

It is an arithmetic number, because the mean of its divisors is an integer number (10843683192).

Almost surely, 2^81930050682 is an apocalyptic number.

81930050682 is an abundant number, since it is smaller than the sum of its proper divisors (91568880390).

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

81930050682 is a wasteful number, since it uses less digits than its factorization.

81930050682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803235813.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 81930050682 in words is "eighty-one billion, nine hundred thirty million, fifty thousand, six hundred eighty-two".