81703249091304 has 64 divisors (see below), whose sum is σ = 208774542398400. Its totient is φ = 26636913375744.

The previous prime is 81703249091297. The next prime is 81703249091417. The reversal of 81703249091304 is 40319094230718.

It is a happy number.

81703249091304 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146167837 + ... + 146725740.

It is an arithmetic number, because the mean of its divisors is an integer number (3262102224975).

Almost surely, 2^{81703249091304} is an apocalyptic number.

It is an amenable number.

81703249091304 is an abundant number, since it is smaller than the sum of its proper divisors (127071293307096).

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

81703249091304 is a wasteful number, since it uses less digits than its factorization.

81703249091304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292893842 (or 292893838 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 81703249091304 in words is "eighty-one trillion, seven hundred three billion, two hundred forty-nine million, ninety-one thousand, three hundred four".