85644141812 has 24 divisors (see below), whose sum is σ = 157631104512. Its totient is φ = 40658810400.

The previous prime is 85644141811. The next prime is 85644141841. The reversal of 85644141812 is 21814144658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85644141811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6509264 + ... + 6522407.

It is an arithmetic number, because the mean of its divisors is an integer number (6567962688).

Almost surely, 2^85644141812 is an apocalyptic number.

It is an amenable number.

85644141812 is a deficient number, since it is larger than the sum of its proper divisors (71986962700).

85644141812 is a wasteful number, since it uses less digits than its factorization.

85644141812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13031759 (or 13031757 counting only the distinct ones).

The product of its digits is 245760, while the sum is 44.

The spelling of 85644141812 in words is "eighty-five billion, six hundred forty-four million, one hundred forty-one thousand, eight hundred twelve".