85478066664 has 16 divisors (see below), whose sum is σ = 213695166720. Its totient is φ = 28492688880.

The previous prime is 85478066657. The next prime is 85478066693. The reversal of 85478066664 is 46666087458.

It is a junction number, because it is equal to n+sod(n) for n = 85478066598 and 85478066607.

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, 1780793032 + ... + 1780793079.

It is an arithmetic number, because the mean of its divisors is an integer number (13355947920).

Almost surely, 2^85478066664 is an apocalyptic number.

It is an amenable number.

85478066664 is an abundant number, since it is smaller than the sum of its proper divisors (128217100056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85478066664 is a wasteful number, since it uses less digits than its factorization.

85478066664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561586120 (or 3561586116 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 60.

The spelling of 85478066664 in words is "eighty-five billion, four hundred seventy-eight million, sixty-six thousand, six hundred sixty-four".