81341447806814 has 8 divisors (see below), whose sum is σ = 131397723380280. Its totient is φ = 37542206680056.

The previous prime is 81341447806793. The next prime is 81341447806889. The reversal of 81341447806814 is 41860874414318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×81341447806814² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1564258611644 + ... + 1564258611695.

It is an arithmetic number, because the mean of its divisors is an integer number (16424715422535).

Almost surely, 2^{81341447806814} is an apocalyptic number.

81341447806814 is a deficient number, since it is larger than the sum of its proper divisors (50056275573466).

81341447806814 is a wasteful number, since it uses less digits than its factorization.

81341447806814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128517223354.

The product of its (nonzero) digits is 16515072, while the sum is 59.

The spelling of 81341447806814 in words is "eighty-one trillion, three hundred forty-one billion, four hundred forty-seven million, eight hundred six thousand, eight hundred fourteen".