385384588877 has 4 divisors (see below), whose sum is σ = 385389092796. Its totient is φ = 385380084960.

The previous prime is 385384588873. The next prime is 385384588891. The reversal of 385384588877 is 778885483583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 778885483583 = 369913 ⋅2105591.

It can be written as a sum of positive squares in 2 ways, for example, as 56437604356 + 328946984521 = 237566^2 + 573539^2 .

It is a cyclic number.

It is not a de Polignac number, because 385384588877 - 2² = 385384588873 is a prime.

It is a super-2 number, since 2×385384588877² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385384588873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2121074 + ... + 2295587.

It is an arithmetic number, because the mean of its divisors is an integer number (96347273199).

Almost surely, 2^385384588877 is an apocalyptic number.

It is an amenable number.

385384588877 is a deficient number, since it is larger than the sum of its proper divisors (4503919).

385384588877 is an equidigital number, since it uses as much as digits as its factorization.

385384588877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503918.

The product of its digits is 1445068800, while the sum is 74.

The spelling of 385384588877 in words is "three hundred eighty-five billion, three hundred eighty-four million, five hundred eighty-eight thousand, eight hundred seventy-seven".