85647928228 has 12 divisors (see below), whose sum is σ = 149890562892. Its totient is φ = 42822053120.

The previous prime is 85647928213. The next prime is 85647928231. The reversal of 85647928228 is 82282974658.

It can be written as a sum of positive squares in 2 ways, for example, as 21313664064 + 64334264164 = 145992^2 + 253642^2 .

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, 374425 + ... + 558112.

It is an arithmetic number, because the mean of its divisors is an integer number (12490880241).

Almost surely, 2^85647928228 is an apocalyptic number.

It is an amenable number.

85647928228 is a deficient number, since it is larger than the sum of its proper divisors (64242634664).

85647928228 is a wasteful number, since it uses less digits than its factorization.

85647928228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955502 (or 955500 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 61.

The spelling of 85647928228 in words is "eighty-five billion, six hundred forty-seven million, nine hundred twenty-eight thousand, two hundred twenty-eight".