85443871473 has 12 divisors (see below), whose sum is σ = 129914658640. Its totient is φ = 53964550296.

The previous prime is 85443871433. The next prime is 85443871493. The reversal of 85443871473 is 37417834458.

85443871473 is a `hidden beast` number, since 8 + 54 + 43 + 87 + 1 + 473 = 666.

It is not a de Polignac number, because 85443871473 - 2⁸ = 85443871217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85443871423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249835711 + ... + 249836052.

Almost surely, 2^85443871473 is an apocalyptic number.

It is an amenable number.

85443871473 is a deficient number, since it is larger than the sum of its proper divisors (44470787167).

85443871473 is a wasteful number, since it uses less digits than its factorization.

85443871473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499671788 (or 499671785 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 54.

The spelling of 85443871473 in words is "eighty-five billion, four hundred forty-three million, eight hundred seventy-one thousand, four hundred seventy-three".