85531496872445 has 16 divisors (see below), whose sum is σ = 110546476889520. Its totient is φ = 63154026169344.

The previous prime is 85531496872433. The next prime is 85531496872543. The reversal of 85531496872445 is 54427869413558.

It can be written as a sum of positive squares in 8 ways, for example, as 53778564891769 + 31752931980676 = 7333387^2 + 5634974^2 .

It is a cyclic number.

It is not a de Polignac number, because 85531496872445 - 2¹⁴ = 85531496856061 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79614374 + ... + 80681543.

It is an arithmetic number, because the mean of its divisors is an integer number (6909154805595).

Almost surely, 2^{85531496872445} is an apocalyptic number.

It is an amenable number.

85531496872445 is a deficient number, since it is larger than the sum of its proper divisors (25014980017075).

85531496872445 is a wasteful number, since it uses less digits than its factorization.

85531496872445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160304144.

The product of its digits is 1161216000, while the sum is 71.

The spelling of 85531496872445 in words is "eighty-five trillion, five hundred thirty-one billion, four hundred ninety-six million, eight hundred seventy-two thousand, four hundred forty-five".