478235197441 has 4 divisors (see below), whose sum is σ = 480287709252. Its totient is φ = 476182685632.

The previous prime is 478235197421. The next prime is 478235197477. The reversal of 478235197441 is 144791532874.

It is a happy number.

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 205688553841 + 272546643600 = 453529^2 + 522060^2 .

It is a cyclic number.

It is not a de Polignac number, because 478235197441 - 2⁷ = 478235197313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478235197421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026255556 + ... + 1026256021.

It is an arithmetic number, because the mean of its divisors is an integer number (120071927313).

Almost surely, 2^478235197441 is an apocalyptic number.

It is an amenable number.

478235197441 is a deficient number, since it is larger than the sum of its proper divisors (2052511811).

478235197441 is a wasteful number, since it uses less digits than its factorization.

478235197441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052511810.

The product of its digits is 6773760, while the sum is 55.

The spelling of 478235197441 in words is "four hundred seventy-eight billion, two hundred thirty-five million, one hundred ninety-seven thousand, four hundred forty-one".