394575335728 has 60 divisors (see below), whose sum is σ = 890319941472. Its totient is φ = 168910600320.

The previous prime is 394575335701. The next prime is 394575335753. The reversal of 394575335728 is 827533575493.

It is a happy number.

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, 400633 + ... + 974503.

Almost surely, 2^394575335728 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 394575335728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445159970736).

394575335728 is an abundant number, since it is smaller than the sum of its proper divisors (495744605744).

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

394575335728 is a wasteful number, since it uses less digits than its factorization.

394575335728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574770 (or 574757 counting only the distinct ones).

The product of its digits is 95256000, while the sum is 61.

The spelling of 394575335728 in words is "three hundred ninety-four billion, five hundred seventy-five million, three hundred thirty-five thousand, seven hundred twenty-eight".