85646744120 has 32 divisors (see below), whose sum is σ = 220234485600. Its totient is φ = 29364597888.

The previous prime is 85646744119. The next prime is 85646744123. The reversal of 85646744120 is 2144764658.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85646744123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152940335 + ... + 152940894.

It is an arithmetic number, because the mean of its divisors is an integer number (6882327675).

Almost surely, 2^85646744120 is an apocalyptic number.

It is an amenable number.

85646744120 is an abundant number, since it is smaller than the sum of its proper divisors (134587741480).

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

85646744120 is a wasteful number, since it uses less digits than its factorization.

85646744120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305881247 (or 305881243 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 85646744120 in words is "eighty-five billion, six hundred forty-six million, seven hundred forty-four thousand, one hundred twenty".