85172430397834 has 16 divisors (see below), whose sum is σ = 142330586607720. Its totient is φ = 37954823094720.

The previous prime is 85172430397829. The next prime is 85172430397889. The reversal of 85172430397834 is 43879303427158.

It can be written as a sum of positive squares in 4 ways, for example, as 60220936846225 + 24951493551609 = 7760215^2 + 4995147^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56480390757 + ... + 56480392264.

Almost surely, 2^{85172430397834} is an apocalyptic number.

85172430397834 is a deficient number, since it is larger than the sum of its proper divisors (57158156209886).

85172430397834 is a wasteful number, since it uses less digits than its factorization.

85172430397834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112960783065.

The product of its (nonzero) digits is 121927680, while the sum is 64.

The spelling of 85172430397834 in words is "eighty-five trillion, one hundred seventy-two billion, four hundred thirty million, three hundred ninety-seven thousand, eight hundred thirty-four".