24180561001 has 3 divisors (see below), whose sum is σ = 24180716503. Its totient is φ = 24180405500.

The previous prime is 24180560983. The next prime is 24180561023. The reversal of 24180561001 is 10016508142.

The square root of 24180561001 is 155501.

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., 15438311001 + 8742250000 = 124251^2 + 93500^2 .

It is not a de Polignac number, because 24180561001 - 2¹⁷ = 24180429929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24180561091) 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, 77751 + ... + 233251.

Almost surely, 2^24180561001 is an apocalyptic number.

24180561001 is the 155501-st square number.

24180561001 is the 77751-st centered octagonal number.

It is an amenable number.

24180561001 is a deficient number, since it is larger than the sum of its proper divisors (155502).

24180561001 is an frugal number, since it uses more digits than its factorization.

24180561001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311002 (or 155501 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The spelling of 24180561001 in words is "twenty-four billion, one hundred eighty million, five hundred sixty-one thousand, one".