385568628777 has 24 divisors (see below), whose sum is σ = 571359264840. Its totient is φ = 250405758720.

The previous prime is 385568628743. The next prime is 385568628833. The reversal of 385568628777 is 777826865583.

385568628777 is a `hidden beast` number, since 3 + 8 + 556 + 8 + 62 + 8 + 7 + 7 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 24931146816 + 360637481961 = 157896^2 + 600531^2 .

It is not a de Polignac number, because 385568628777 - 2⁷ = 385568628649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385568628727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521902 + ... + 1021527.

It is an arithmetic number, because the mean of its divisors is an integer number (23806636035).

Almost surely, 2^385568628777 is an apocalyptic number.

It is an amenable number.

385568628777 is a deficient number, since it is larger than the sum of its proper divisors (185790636063).

385568628777 is a wasteful number, since it uses less digits than its factorization.

385568628777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544153 (or 1544150 counting only the distinct ones).

The product of its digits is 948326400, while the sum is 72.

The spelling of 385568628777 in words is "three hundred eighty-five billion, five hundred sixty-eight million, six hundred twenty-eight thousand, seven hundred seventy-seven".