85408745672 has 16 divisors (see below), whose sum is σ = 160147273740. Its totient is φ = 42702806016.

The previous prime is 85408745647. The next prime is 85408745707. The reversal of 85408745672 is 27654780458.

It can be written as a sum of positive squares in 2 ways, for example, as 83871635236 + 1537110436 = 289606^2 + 39206^2 .

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, 54668 + ... + 416900.

Almost surely, 2^85408745672 is an apocalyptic number.

It is an amenable number.

85408745672 is a deficient number, since it is larger than the sum of its proper divisors (74738528068).

85408745672 is a wasteful number, since it uses less digits than its factorization.

85408745672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391712 (or 391708 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 56.

The spelling of 85408745672 in words is "eighty-five billion, four hundred eight million, seven hundred forty-five thousand, six hundred seventy-two".