185240228209872 has 80 divisors (see below), whose sum is σ = 522157098759168. Its totient is φ = 56120880378240.

The previous prime is 185240228209853. The next prime is 185240228209873. The reversal of 185240228209872 is 278902822042581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185240228209873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36762328 + ... + 41496375.

Almost surely, 2^{185240228209872} is an apocalyptic number.

185240228209872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

185240228209872 is an abundant number, since it is smaller than the sum of its proper divisors (336916870549296).

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

185240228209872 is a wasteful number, since it uses less digits than its factorization.

185240228209872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78263208 (or 78263202 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 60.

The spelling of 185240228209872 in words is "one hundred eighty-five trillion, two hundred forty billion, two hundred twenty-eight million, two hundred nine thousand, eight hundred seventy-two".