395824665601 has 4 divisors (see below), whose sum is σ = 403293055572. Its totient is φ = 388356275632.

The previous prime is 395824665563. The next prime is 395824665619. The reversal of 395824665601 is 106566428593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106566428593 = 661 ⋅161220013.

It can be written as a sum of positive squares in 2 ways, for example, as 330626150001 + 65198515600 = 575001^2 + 255340^2 .

It is a cyclic number.

It is not a de Polignac number, because 395824665601 - 2²³ = 395816276993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395824669601) 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, 3734194906 + ... + 3734195011.

It is an arithmetic number, because the mean of its divisors is an integer number (100823263893).

Almost surely, 2^395824665601 is an apocalyptic number.

It is an amenable number.

395824665601 is a deficient number, since it is larger than the sum of its proper divisors (7468389971).

395824665601 is an equidigital number, since it uses as much as digits as its factorization.

395824665601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7468389970.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 395824665601 in words is "three hundred ninety-five billion, eight hundred twenty-four million, six hundred sixty-five thousand, six hundred one".