448161582671 has 4 divisors (see below), whose sum is σ = 488903544744. Its totient is φ = 407419620600.

The previous prime is 448161582611. The next prime is 448161582683. The reversal of 448161582671 is 176285161844.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 448161582671 - 2⁶ = 448161582607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448161582611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20370981020 + ... + 20370981041.

It is an arithmetic number, because the mean of its divisors is an integer number (122225886186).

Almost surely, 2^448161582671 is an apocalyptic number.

448161582671 is a deficient number, since it is larger than the sum of its proper divisors (40741962073).

448161582671 is a wasteful number, since it uses less digits than its factorization.

448161582671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40741962072.

The product of its digits is 2580480, while the sum is 53.

The spelling of 448161582671 in words is "four hundred forty-eight billion, one hundred sixty-one million, five hundred eighty-two thousand, six hundred seventy-one".