81370003814 has 8 divisors (see below), whose sum is σ = 133150915368. Its totient is φ = 36986365360.

The previous prime is 81370003789. The next prime is 81370003831. The reversal of 81370003814 is 41830007318.

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

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 3 ways as a sum of consecutive naturals, for example, 1849318247 + ... + 1849318290.

It is an arithmetic number, because the mean of its divisors is an integer number (16643864421).

Almost surely, 2^81370003814 is an apocalyptic number.

81370003814 is a deficient number, since it is larger than the sum of its proper divisors (51780911554).

81370003814 is a wasteful number, since it uses less digits than its factorization.

81370003814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698636550.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 81370003814 in words is "eighty-one billion, three hundred seventy million, three thousand, eight hundred fourteen".