24194898406561 has 9 divisors (see below), whose sum is σ = 25701935924851. Its totient is φ = 22771590387232.

The previous prime is 24194898406543. The next prime is 24194898406597. The reversal of 24194898406561 is 16560489849142.

The square root of 24194898406561 is 4918831.

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., 18836858621025 + 5358039785536 = 4340145^2 + 2314744^2 .

It is not a de Polignac number, because 24194898406561 - 2¹⁷ = 24194898275489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24194898406541) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 83475456 + ... + 83764798.

Almost surely, 2^{24194898406561} is an apocalyptic number.

24194898406561 is the 4918831-st square number.

24194898406561 is the 2459416-th centered octagonal number.

It is an amenable number.

24194898406561 is a deficient number, since it is larger than the sum of its proper divisors (1507037518290).

24194898406561 is an frugal number, since it uses more digits than its factorization.

24194898406561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578720 (or 289360 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 67.

The spelling of 24194898406561 in words is "twenty-four trillion, one hundred ninety-four billion, eight hundred ninety-eight million, four hundred six thousand, five hundred sixty-one".