81124386110 has 16 divisors (see below), whose sum is σ = 146629807632. Its totient is φ = 32315107200.

The previous prime is 81124386061. The next prime is 81124386137. The reversal of 81124386110 is 1168342118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16828376 + ... + 16833195.

It is an arithmetic number, because the mean of its divisors is an integer number (9164362977).

Almost surely, 2^81124386110 is an apocalyptic number.

81124386110 is a deficient number, since it is larger than the sum of its proper divisors (65505421522).

81124386110 is a wasteful number, since it uses less digits than its factorization.

81124386110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33661819.

The product of its (nonzero) digits is 9216, while the sum is 35.

The spelling of 81124386110 in words is "eighty-one billion, one hundred twenty-four million, three hundred eighty-six thousand, one hundred ten".