81024442018 has 16 divisors (see below), whose sum is σ = 135107755776. Its totient is φ = 36189576720.

The previous prime is 81024442003. The next prime is 81024442019.

81024442018 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (81024442019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50262496 + ... + 50264107.

It is an arithmetic number, because the mean of its divisors is an integer number (8444234736).

Almost surely, 2^81024442018 is an apocalyptic number.

81024442018 is a deficient number, since it is larger than the sum of its proper divisors (54083313758).

81024442018 is a wasteful number, since it uses less digits than its factorization.

81024442018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100526649.

The product of its (nonzero) digits is 16384, while the sum is 34.

The spelling of 81024442018 in words is "eighty-one billion, twenty-four million, four hundred forty-two thousand, eighteen".