272448478161 has 48 divisors (see below), whose sum is σ = 425073168000. Its totient is φ = 167639383296.

The previous prime is 272448478121. The next prime is 272448478177. The reversal of 272448478161 is 161874844272.

It is a happy number.

272448478161 is a `hidden beast` number, since 2 + 7 + 2 + 4 + 4 + 8 + 478 + 161 = 666.

It is not a de Polignac number, because 272448478161 - 2⁷ = 272448478033 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 272448478098 and 272448478107.

It is not an unprimeable number, because it can be changed into a prime (272448478121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10185741 + ... + 10212453.

It is an arithmetic number, because the mean of its divisors is an integer number (8855691000).

Almost surely, 2^272448478161 is an apocalyptic number.

It is an amenable number.

272448478161 is a deficient number, since it is larger than the sum of its proper divisors (152624689839).

272448478161 is a wasteful number, since it uses less digits than its factorization.

272448478161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28470 (or 28467 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The spelling of 272448478161 in words is "two hundred seventy-two billion, four hundred forty-eight million, four hundred seventy-eight thousand, one hundred sixty-one".