85688212788 has 72 divisors (see below), whose sum is σ = 218958649728. Its totient is φ = 28252456128.

The previous prime is 85688212781. The next prime is 85688212817. The reversal of 85688212788 is 88721288658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85688212781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3275970 + ... + 3302022.

Almost surely, 2^85688212788 is an apocalyptic number.

It is an amenable number.

85688212788 is an abundant number, since it is smaller than the sum of its proper divisors (133270436940).

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

85688212788 is a wasteful number, since it uses less digits than its factorization.

85688212788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27053 (or 27048 counting only the distinct ones).

The product of its digits is 27525120, while the sum is 63.

The spelling of 85688212788 in words is "eighty-five billion, six hundred eighty-eight million, two hundred twelve thousand, seven hundred eighty-eight".