81710144088702 has 32 divisors (see below), whose sum is σ = 164867683910400. Its totient is φ = 26995485578880.

The previous prime is 81710144088701. The next prime is 81710144088737. The reversal of 81710144088702 is 20788044101718.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81710144088701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115516927 + ... + 116222117.

It is an arithmetic number, because the mean of its divisors is an integer number (5152115122200).

Almost surely, 2^{81710144088702} is an apocalyptic number.

81710144088702 is an abundant number, since it is smaller than the sum of its proper divisors (83157539821698).

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

81710144088702 is a wasteful number, since it uses less digits than its factorization.

81710144088702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876208.

The product of its (nonzero) digits is 802816, while the sum is 51.

The spelling of 81710144088702 in words is "eighty-one trillion, seven hundred ten billion, one hundred forty-four million, eighty-eight thousand, seven hundred two".