81348147414 has 48 divisors (see below), whose sum is σ = 186697001088. Its totient is φ = 25510761216.

The previous prime is 81348147367. The next prime is 81348147473. The reversal of 81348147414 is 41474184318.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 81348147414.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 730459 + ... + 834425.

It is an arithmetic number, because the mean of its divisors is an integer number (3889520856).

Almost surely, 2^81348147414 is an apocalyptic number.

81348147414 is an abundant number, since it is smaller than the sum of its proper divisors (105348853674).

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

81348147414 is a wasteful number, since it uses less digits than its factorization.

81348147414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106549 (or 106546 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The spelling of 81348147414 in words is "eighty-one billion, three hundred forty-eight million, one hundred forty-seven thousand, four hundred fourteen".