81110049366 has 16 divisors (see below), whose sum is σ = 167813895600. Its totient is φ = 26104383648.

The previous prime is 81110049353. The next prime is 81110049379. The reversal of 81110049366 is 66394001118.

It is an interprime number because it is at equal distance from previous prime (81110049353) and next prime (81110049379).

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, 233074681 + ... + 233075028.

It is an arithmetic number, because the mean of its divisors is an integer number (10488368475).

Almost surely, 2^81110049366 is an apocalyptic number.

81110049366 is an abundant number, since it is smaller than the sum of its proper divisors (86703846234).

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

81110049366 is a wasteful number, since it uses less digits than its factorization.

81110049366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466149743.

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 81110049366 in words is "eighty-one billion, one hundred ten million, forty-nine thousand, three hundred sixty-six".