86725122171 has 16 divisors (see below), whose sum is σ = 116299035648. Its totient is φ = 57484857600.

The previous prime is 86725122149. The next prime is 86725122173. The reversal of 86725122171 is 17122152768.

It is not a de Polignac number, because 86725122171 - 2¹¹ = 86725120123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86725122173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286411 + ... + 505451.

It is an arithmetic number, because the mean of its divisors is an integer number (7268689728).

Almost surely, 2^86725122171 is an apocalyptic number.

86725122171 is a deficient number, since it is larger than the sum of its proper divisors (29573913477).

86725122171 is a wasteful number, since it uses less digits than its factorization.

86725122171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219802.

The product of its digits is 94080, while the sum is 42.

The spelling of 86725122171 in words is "eighty-six billion, seven hundred twenty-five million, one hundred twenty-two thousand, one hundred seventy-one".