385133481846865 has 4 divisors (see below), whose sum is σ = 462160178216244. Its totient is φ = 308106785477488.

The previous prime is 385133481846857. The next prime is 385133481846907. The reversal of 385133481846865 is 568648184331583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94763975233041 + 290369506613824 = 9734679^2 + 17040232^2 .

It is a cyclic number.

It is not a de Polignac number, because 385133481846865 - 2³ = 385133481846857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38513348184682 + ... + 38513348184691.

It is an arithmetic number, because the mean of its divisors is an integer number (115540044554061).

Almost surely, 2^{385133481846865} is an apocalyptic number.

It is an amenable number.

385133481846865 is a deficient number, since it is larger than the sum of its proper divisors (77026696369379).

385133481846865 is an equidigital number, since it uses as much as digits as its factorization.

385133481846865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77026696369378.

The product of its digits is 1592524800, while the sum is 73.

The spelling of 385133481846865 in words is "three hundred eighty-five trillion, one hundred thirty-three billion, four hundred eighty-one million, eight hundred forty-six thousand, eight hundred sixty-five".