85540678860 has 144 divisors (see below), whose sum is σ = 300050515296. Its totient is φ = 18048135168.

The previous prime is 85540678799. The next prime is 85540678913. The reversal of 85540678860 is 6887604558.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85540678860.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1080837 + ... + 1157276.

It is an arithmetic number, because the mean of its divisors is an integer number (2083684134).

Almost surely, 2^85540678860 is an apocalyptic number.

It is an amenable number.

85540678860 is an abundant number, since it is smaller than the sum of its proper divisors (214509836436).

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

85540678860 is a wasteful number, since it uses less digits than its factorization.

85540678860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238152 (or 2238143 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 57.

The spelling of 85540678860 in words is "eighty-five billion, five hundred forty million, six hundred seventy-eight thousand, eight hundred sixty".