24816015961 has 9 divisors (see below), whose sum is σ = 27279013279. Its totient is φ = 22558439200.

The previous prime is 24816015953. The next prime is 24816016013. The reversal of 24816015961 is 16951061842.

The square root of 24816015961 is 157531.

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., 279926361 + 24536089600 = 16731^2 + 156640^2 .

It is not a de Polignac number, because 24816015961 - 2³ = 24816015953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24816015911) 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, 1725681 + ... + 1740001.

Almost surely, 2^24816015961 is an apocalyptic number.

24816015961 is the 157531-st square number.

24816015961 is the 78766-th centered octagonal number.

It is an amenable number.

24816015961 is a deficient number, since it is larger than the sum of its proper divisors (2462997318).

24816015961 is an frugal number, since it uses more digits than its factorization.

24816015961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28664 (or 14332 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 24816015961 in words is "twenty-four billion, eight hundred sixteen million, fifteen thousand, nine hundred sixty-one".