85278502852 has 6 divisors (see below), whose sum is σ = 149237379998. Its totient is φ = 42639251424.

The previous prime is 85278502849. The next prime is 85278502937. The reversal of 85278502852 is 25820587258.

It can be written as a sum of positive squares in only one way, i.e., 72956170816 + 12322332036 = 270104^2 + 111006^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85278502852.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10659812853 + ... + 10659812860.

Almost surely, 2^85278502852 is an apocalyptic number.

It is an amenable number.

85278502852 is a deficient number, since it is larger than the sum of its proper divisors (63958877146).

85278502852 is a wasteful number, since it uses less digits than its factorization.

85278502852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21319625717 (or 21319625715 counting only the distinct ones).

The product of its (nonzero) digits is 3584000, while the sum is 52.

The spelling of 85278502852 in words is "eighty-five billion, two hundred seventy-eight million, five hundred two thousand, eight hundred fifty-two".