81707317113202 has 16 divisors (see below), whose sum is σ = 133704107733024. Its totient is φ = 37139349268000.

The previous prime is 81707317113193. The next prime is 81707317113203. The reversal of 81707317113202 is 20231171370718.

It is not an unprimeable number, because it can be changed into a prime (81707317113203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14553124 + ... + 19370287.

It is an arithmetic number, because the mean of its divisors is an integer number (8356506733314).

Almost surely, 2^{81707317113202} is an apocalyptic number.

81707317113202 is a deficient number, since it is larger than the sum of its proper divisors (51996790619822).

81707317113202 is a wasteful number, since it uses less digits than its factorization.

81707317113202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34032905.

The product of its (nonzero) digits is 98784, while the sum is 43.

The spelling of 81707317113202 in words is "eighty-one trillion, seven hundred seven billion, three hundred seventeen million, one hundred thirteen thousand, two hundred two".