85623488578 has 8 divisors (see below), whose sum is σ = 128451569868. Its totient is φ = 42806298624.

The previous prime is 85623488557. The next prime is 85623488609. The reversal of 85623488578 is 87588432658.

It can be written as a sum of positive squares in 2 ways, for example, as 61051985569 + 24571503009 = 247087^2 + 156753^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2703151 + ... + 2734642.

Almost surely, 2^85623488578 is an apocalyptic number.

85623488578 is a deficient number, since it is larger than the sum of its proper divisors (42828081290).

85623488578 is a wasteful number, since it uses less digits than its factorization.

85623488578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5445668.

The product of its digits is 103219200, while the sum is 64.

The spelling of 85623488578 in words is "eighty-five billion, six hundred twenty-three million, four hundred eighty-eight thousand, five hundred seventy-eight".