385640220204 has 36 divisors (see below), whose sum is σ = 975509698800. Its totient is φ = 128454838560.

The previous prime is 385640220151. The next prime is 385640220227. The reversal of 385640220204 is 402022046583.

385640220204 is a `hidden beast` number, since 3 + 8 + 5 + 640 + 2 + 2 + 0 + 2 + 0 + 4 = 666.

385640220204 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3778167 + ... + 3878894.

Almost surely, 2^385640220204 is an apocalyptic number.

It is an amenable number.

385640220204 is an abundant number, since it is smaller than the sum of its proper divisors (589869478596).

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

385640220204 is a wasteful number, since it uses less digits than its factorization.

385640220204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7658470 (or 7658465 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 385640220204 its reverse (402022046583), we get a palindrome (787662266787).

The spelling of 385640220204 in words is "three hundred eighty-five billion, six hundred forty million, two hundred twenty thousand, two hundred four".