81541186034 has 32 divisors (see below), whose sum is σ = 159122727936. Its totient is φ = 30388018320.

The previous prime is 81541186031. The next prime is 81541186063. The reversal of 81541186034 is 43068114518.

It is a junction number, because it is equal to n+sod(n) for n = 81541185982 and 81541186000.

It is not an unprimeable number, because it can be changed into a prime (81541186031) 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, 11507072 + ... + 11514155.

It is an arithmetic number, because the mean of its divisors is an integer number (4972585248).

Almost surely, 2^81541186034 is an apocalyptic number.

81541186034 is a deficient number, since it is larger than the sum of its proper divisors (77581541902).

81541186034 is a wasteful number, since it uses less digits than its factorization.

81541186034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23021270.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 81541186034 in words is "eighty-one billion, five hundred forty-one million, one hundred eighty-six thousand, thirty-four".