85816171072523 has 8 divisors (see below), whose sum is σ = 86238809440560. Its totient is φ = 85394220482560.

The previous prime is 85816171072507. The next prime is 85816171072529. The reversal of 85816171072523 is 32527017161858.

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

It is a cyclic number.

It is not a de Polignac number, because 85816171072523 - 2⁴ = 85816171072507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85816171072529) 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, 171694358 + ... + 172193451.

It is an arithmetic number, because the mean of its divisors is an integer number (10779851180070).

Almost surely, 2^{85816171072523} is an apocalyptic number.

85816171072523 is a deficient number, since it is larger than the sum of its proper divisors (422638368037).

85816171072523 is a wasteful number, since it uses less digits than its factorization.

85816171072523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343889037.

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 85816171072523 in words is "eighty-five trillion, eight hundred sixteen billion, one hundred seventy-one million, seventy-two thousand, five hundred twenty-three".