24380636449 has 9 divisors (see below), whose sum is σ = 26402532339. Its totient is φ = 22503329160.

The previous prime is 24380636417. The next prime is 24380636459. The reversal of 24380636449 is 94463608342.

The square root of 24380636449 is 156143.

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

It can be written as a sum of positive squares in only one way, i.e., 3606603025 + 20774033424 = 60055^2 + 144132^2 .

It is not a de Polignac number, because 24380636449 - 2⁵ = 24380636417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24380636459) 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 8 ways as a sum of consecutive naturals, for example, 2023854 + ... + 2035864.

Almost surely, 2^24380636449 is an apocalyptic number.

24380636449 is the 156143-rd square number.

24380636449 is the 78072-nd centered octagonal number.

It is an amenable number.

24380636449 is a deficient number, since it is larger than the sum of its proper divisors (2021895890).

24380636449 is an frugal number, since it uses more digits than its factorization.

24380636449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24048 (or 12024 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 49.

Multiplying 24380636449 by its sum of digits (49), we get a square (1194651186001 = 1093001²).

The spelling of 24380636449 in words is "twenty-four billion, three hundred eighty million, six hundred thirty-six thousand, four hundred forty-nine".