81032111123018 has 8 divisors (see below), whose sum is σ = 132598000019520. Its totient is φ = 36832777783180.

The previous prime is 81032111122967. The next prime is 81032111123059.

81032111123018 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841638889138 + ... + 1841638889181.

It is an arithmetic number, because the mean of its divisors is an integer number (16574750002440).

Almost surely, 2^{81032111123018} is an apocalyptic number.

81032111123018 is a deficient number, since it is larger than the sum of its proper divisors (51565888896502).

81032111123018 is a wasteful number, since it uses less digits than its factorization.

81032111123018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683277778332.

The product of its (nonzero) digits is 2304, while the sum is 32.

It can be divided in two parts, 8103211 and 1123018, that added together give a palindrome (9226229).

The spelling of 81032111123018 in words is "eighty-one trillion, thirty-two billion, one hundred eleven million, one hundred twenty-three thousand, eighteen".