81090233324 has 12 divisors (see below), whose sum is σ = 141910700064. Its totient is φ = 40544319024.

The previous prime is 81090233321. The next prime is 81090233327. The reversal of 81090233324 is 42333209018.

It is an interprime number because it is at equal distance from previous prime (81090233321) and next prime (81090233327).

It is not an unprimeable number, because it can be changed into a prime (81090233321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69677 + ... + 408699.

It is an arithmetic number, because the mean of its divisors is an integer number (11825891672).

Almost surely, 2^81090233324 is an apocalyptic number.

It is an amenable number.

81090233324 is a deficient number, since it is larger than the sum of its proper divisors (60820466740).

81090233324 is a wasteful number, since it uses less digits than its factorization.

81090233324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398824 (or 398822 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 81090233324 in words is "eighty-one billion, ninety million, two hundred thirty-three thousand, three hundred twenty-four".