2447844864481 has 3 divisors (see below), whose sum is σ = 2447846429041. Its totient is φ = 2447843299922.

The previous prime is 2447844864461. The next prime is 2447844864497. The reversal of 2447844864481 is 1844684487442.

The square root of 2447844864481 is 1564559.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2447844864481 - 2¹⁷ = 2447844733409 is a prime.

It is a super-2 number, since 2×2447844864481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2447844864431) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 782280 + ... + 2346838.

Almost surely, 2^{2447844864481} is an apocalyptic number.

2447844864481 is the 1564559-th square number.

2447844864481 is the 782280-th centered octagonal number.

It is an amenable number.

2447844864481 is a deficient number, since it is larger than the sum of its proper divisors (1564560).

2447844864481 is an frugal number, since it uses more digits than its factorization.

2447844864481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129118 (or 1564559 counting only the distinct ones).

The product of its digits is 176160768, while the sum is 64.

Multiplying 2447844864481 by its sum of digits (64), we get a square (156662071326784 = 12516472²).

The spelling of 2447844864481 in words is "two trillion, four hundred forty-seven billion, eight hundred forty-four million, eight hundred sixty-four thousand, four hundred eighty-one".