385775470445 has 4 divisors (see below), whose sum is σ = 462930564540. Its totient is φ = 308620376352.

The previous prime is 385775470369. The next prime is 385775470453. The reversal of 385775470445 is 544074577583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544074577583 = 1543 ⋅352608281.

It can be written as a sum of positive squares in 2 ways, for example, as 212274897289 + 173500573156 = 460733^2 + 416534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385775470445 is a prime.

It is a super-2 number, since 2×385775470445² (a number of 24 digits) contains 22 as substring.

It is a congruent 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, 38577547040 + ... + 38577547049.

It is an arithmetic number, because the mean of its divisors is an integer number (115732641135).

Almost surely, 2^385775470445 is an apocalyptic number.

It is an amenable number.

385775470445 is a deficient number, since it is larger than the sum of its proper divisors (77155094095).

385775470445 is an equidigital number, since it uses as much as digits as its factorization.

385775470445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77155094094.

The product of its (nonzero) digits is 65856000, while the sum is 59.

The spelling of 385775470445 in words is "three hundred eighty-five billion, seven hundred seventy-five million, four hundred seventy thousand, four hundred forty-five".