385153857812 has 24 divisors (see below), whose sum is σ = 699917105832. Its totient is φ = 185306227200.

The previous prime is 385153857797. The next prime is 385153857827. The reversal of 385153857812 is 218758351583.

It is an interprime number because it is at equal distance from previous prime (385153857797) and next prime (385153857827).

It can be written as a sum of positive squares in 4 ways, for example, as 22504200196 + 362649657616 = 150014^2 + 602204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16073639 + ... + 16097582.

It is an arithmetic number, because the mean of its divisors is an integer number (29163212743).

Almost surely, 2^385153857812 is an apocalyptic number.

It is an amenable number.

385153857812 is a deficient number, since it is larger than the sum of its proper divisors (314763248020).

385153857812 is a wasteful number, since it uses less digits than its factorization.

385153857812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32171339 (or 32171337 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 56.

The spelling of 385153857812 in words is "three hundred eighty-five billion, one hundred fifty-three million, eight hundred fifty-seven thousand, eight hundred twelve".