86172584123 has 2 divisors, whose sum is σ = 86172584124. Its totient is φ = 86172584122.

The previous prime is 86172584117. The next prime is 86172584143. The reversal of 86172584123 is 32148527168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86172584123 - 2²⁰ = 86171535547 is a prime.

It is not a weakly prime, because it can be changed into another prime (86172584143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43086292061 + 43086292062.

It is an arithmetic number, because the mean of its divisors is an integer number (43086292062).

Almost surely, 2^86172584123 is an apocalyptic number.

86172584123 is a deficient number, since it is larger than the sum of its proper divisors (1).

86172584123 is an equidigital number, since it uses as much as digits as its factorization.

86172584123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The spelling of 86172584123 in words is "eighty-six billion, one hundred seventy-two million, five hundred eighty-four thousand, one hundred twenty-three".