4561885124449 has 3 divisors (see below), whose sum is σ = 4561887260307. Its totient is φ = 4561882988592.

The previous prime is 4561885124353. The next prime is 4561885124471. The reversal of 4561885124449 is 9444215881654.

It is a happy number.

The square root of 4561885124449 is 2135857.

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 can be written as a sum of positive squares in only one way, i.e., 3203187165025 + 1358697959424 = 1789745^2 + 1165632^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4561885124449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4561885124149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1067929 + ... + 3203785.

It is an arithmetic number, because the mean of its divisors is an integer number (1520629086769).

Almost surely, 2^{4561885124449} is an apocalyptic number.

4561885124449 is the 2135857-th square number.

4561885124449 is the 1067929-th centered octagonal number.

It is an amenable number.

4561885124449 is a deficient number, since it is larger than the sum of its proper divisors (2135858).

4561885124449 is an frugal number, since it uses more digits than its factorization.

4561885124449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271714 (or 2135857 counting only the distinct ones).

The product of its digits is 44236800, while the sum is 61.

The spelling of 4561885124449 in words is "four trillion, five hundred sixty-one billion, eight hundred eighty-five million, one hundred twenty-four thousand, four hundred forty-nine".