81413708014 has 16 divisors (see below), whose sum is σ = 123682507200. Its totient is φ = 40186340064.

The previous prime is 81413707961. The next prime is 81413708027. The reversal of 81413708014 is 41080731418.

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 7 ways as a sum of consecutive naturals, for example, 1367092 + ... + 1425400.

It is an arithmetic number, because the mean of its divisors is an integer number (7730156700).

Almost surely, 2^81413708014 is an apocalyptic number.

81413708014 is a deficient number, since it is larger than the sum of its proper divisors (42268799186).

81413708014 is a wasteful number, since it uses less digits than its factorization.

81413708014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67227.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 81413708014 in words is "eighty-one billion, four hundred thirteen million, seven hundred eight thousand, fourteen".