85121395608 has 32 divisors (see below), whose sum is σ = 213176208960. Its totient is φ = 28324102560.

The previous prime is 85121395561. The next prime is 85121395627. The reversal of 85121395608 is 80659312158.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3092010 + ... + 3119417.

It is an arithmetic number, because the mean of its divisors is an integer number (6661756530).

Almost surely, 2^85121395608 is an apocalyptic number.

It is an amenable number.

85121395608 is an abundant number, since it is smaller than the sum of its proper divisors (128054813352).

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

85121395608 is a wasteful number, since it uses less digits than its factorization.

85121395608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6212007 (or 6212003 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 85121395608 in words is "eighty-five billion, one hundred twenty-one million, three hundred ninety-five thousand, six hundred eight".