385321852566 has 96 divisors (see below), whose sum is σ = 980824785408. Its totient is φ = 107054317440.

The previous prime is 385321852543. The next prime is 385321852603. The reversal of 385321852566 is 665258123583.

It is a happy number.

385321852566 is a `hidden beast` number, since 3 + 8 + 5 + 3 + 21 + 8 + 52 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 358045 + ... + 948071.

It is an arithmetic number, because the mean of its divisors is an integer number (10216924848).

Almost surely, 2^385321852566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385321852566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490412392704).

385321852566 is an abundant number, since it is smaller than the sum of its proper divisors (595502932842).

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

385321852566 is a wasteful number, since it uses less digits than its factorization.

385321852566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590186 (or 590183 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 54.

The spelling of 385321852566 in words is "three hundred eighty-five billion, three hundred twenty-one million, eight hundred fifty-two thousand, five hundred sixty-six".