448215803820665 has 8 divisors (see below), whose sum is σ = 542793450499080. Its totient is φ = 355282985780352.

The previous prime is 448215803820661. The next prime is 448215803820679. The reversal of 448215803820665 is 566028308512844.

It can be written as a sum of positive squares in 4 ways, for example, as 139321856827024 + 308893946993641 = 11803468^2 + 17575379^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 448215803820665 - 2² = 448215803820661 is a prime.

It is a super-2 number, since 2×448215803820665² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 448215803820598 and 448215803820607.

It is not an unprimeable number, because it can be changed into a prime (448215803820661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411207158924 + ... + 411207160013.

It is an arithmetic number, because the mean of its divisors is an integer number (67849181312385).

Almost surely, 2^{448215803820665} is an apocalyptic number.

It is an amenable number.

448215803820665 is a deficient number, since it is larger than the sum of its proper divisors (94577646678415).

448215803820665 is a wasteful number, since it uses less digits than its factorization.

448215803820665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822414319051.

The product of its (nonzero) digits is 88473600, while the sum is 62.

The spelling of 448215803820665 in words is "four hundred forty-eight trillion, two hundred fifteen billion, eight hundred three million, eight hundred twenty thousand, six hundred sixty-five".