4457144471481 has 24 divisors (see below), whose sum is σ = 6933604049736. Its totient is φ = 2742752033280.

The previous prime is 4457144471473. The next prime is 4457144471491. The reversal of 4457144471481 is 1841744417544.

4457144471481 is a `hidden beast` number, since 4 + 4 + 57 + 1 + 4 + 44 + 71 + 481 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 243977711481 + 4213166760000 = 493941^2 + 2052600^2 .

It is not a de Polignac number, because 4457144471481 - 2³ = 4457144471473 is a prime.

It is a super-2 number, since 2×4457144471481² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4457144471401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2355891 + ... + 3803223.

It is an arithmetic number, because the mean of its divisors is an integer number (288900168739).

Almost surely, 2^{4457144471481} is an apocalyptic number.

It is an amenable number.

4457144471481 is a deficient number, since it is larger than the sum of its proper divisors (2476459578255).

4457144471481 is a wasteful number, since it uses less digits than its factorization.

4457144471481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473673 (or 1473670 counting only the distinct ones).

The product of its digits is 8028160, while the sum is 54.

The spelling of 4457144471481 in words is "four trillion, four hundred fifty-seven billion, one hundred forty-four million, four hundred seventy-one thousand, four hundred eighty-one".