81341468012 has 48 divisors (see below), whose sum is σ = 172360032768. Its totient is φ = 32789525760.

The previous prime is 81341467997. The next prime is 81341468017. The reversal of 81341468012 is 21086414318.

It is not an unprimeable number, because it can be changed into a prime (81341468017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721937 + ... + 826967.

It is an arithmetic number, because the mean of its divisors is an integer number (3590834016).

Almost surely, 2^81341468012 is an apocalyptic number.

It is an amenable number.

81341468012 is an abundant number, since it is smaller than the sum of its proper divisors (91018564756).

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

81341468012 is a wasteful number, since it uses less digits than its factorization.

81341468012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106686 (or 106684 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 81341468012 in words is "eighty-one billion, three hundred forty-one million, four hundred sixty-eight thousand, twelve".