385516730664 has 256 divisors, whose sum is σ = 1169925120000. Its totient is φ = 116911372032.

The previous prime is 385516730659. The next prime is 385516730713. The reversal of 385516730664 is 466037615583.

385516730664 is a `hidden beast` number, since 38 + 5 + 516 + 7 + 30 + 6 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 385516730664.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 164820007 + ... + 164822345.

It is an arithmetic number, because the mean of its divisors is an integer number (4570020000).

Almost surely, 2^385516730664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385516730664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (584962560000).

385516730664 is an abundant number, since it is smaller than the sum of its proper divisors (784408389336).

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

385516730664 is a wasteful number, since it uses less digits than its factorization.

385516730664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189 (or 3179 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 385516730664 in words is "three hundred eighty-five billion, five hundred sixteen million, seven hundred thirty thousand, six hundred sixty-four".