385641815417 has 4 divisors (see below), whose sum is σ = 395047713396. Its totient is φ = 376235917440.

The previous prime is 385641815401. The next prime is 385641815431. The reversal of 385641815417 is 714518146583.

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 234988379536 + 150653435881 = 484756^2 + 388141^2 .

It is a cyclic number.

It is not a de Polignac number, because 385641815417 - 2⁴ = 385641815401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385641812417) 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, 4702948928 + ... + 4702949009.

It is an arithmetic number, because the mean of its divisors is an integer number (98761928349).

Almost surely, 2^385641815417 is an apocalyptic number.

It is an amenable number.

385641815417 is a deficient number, since it is larger than the sum of its proper divisors (9405897979).

385641815417 is an equidigital number, since it uses as much as digits as its factorization.

385641815417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9405897978.

The product of its digits is 3225600, while the sum is 53.

The spelling of 385641815417 in words is "three hundred eighty-five billion, six hundred forty-one million, eight hundred fifteen thousand, four hundred seventeen".