385522224840 has 160 divisors (see below), whose sum is σ = 1296736376760. Its totient is φ = 102730291200.

The previous prime is 385522224821. The next prime is 385522224851. The reversal of 385522224840 is 48422225583.

385522224840 is a `hidden beast` number, since 3 + 85 + 522 + 2 + 2 + 4 + 8 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 222763232484 + 162758992356 = 471978^2 + 403434^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 4431360 + ... + 4517520.

Almost surely, 2^385522224840 is an apocalyptic number.

385522224840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385522224840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648368188380).

385522224840 is an abundant number, since it is smaller than the sum of its proper divisors (911214151920).

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

385522224840 is a wasteful number, since it uses less digits than its factorization.

385522224840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87565 (or 87552 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 45.

The spelling of 385522224840 in words is "three hundred eighty-five billion, five hundred twenty-two million, two hundred twenty-four thousand, eight hundred forty".