4202378324845 has 8 divisors (see below), whose sum is σ = 5094842175864. Its totient is φ = 3327243869184.

The previous prime is 4202378324827. The next prime is 4202378324899. The reversal of 4202378324845 is 5484238732024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1015221486724 + 3187156838121 = 1007582^2 + 1785261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4202378324845 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4202378324792 and 4202378324801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4332348304 + ... + 4332349273.

It is an arithmetic number, because the mean of its divisors is an integer number (636855271983).

Almost surely, 2^{4202378324845} is an apocalyptic number.

It is an amenable number.

4202378324845 is a deficient number, since it is larger than the sum of its proper divisors (892463851019).

4202378324845 is an equidigital number, since it uses as much as digits as its factorization.

4202378324845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8664697679.

The product of its (nonzero) digits is 10321920, while the sum is 52.

The spelling of 4202378324845 in words is "four trillion, two hundred two billion, three hundred seventy-eight million, three hundred twenty-four thousand, eight hundred forty-five".