24992820161 has 2 divisors, whose sum is σ = 24992820162. Its totient is φ = 24992820160.

The previous prime is 24992820103. The next prime is 24992820163. The reversal of 24992820161 is 16102829942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24161593600 + 831226561 = 155440^2 + 28831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24992820161 is a prime.

It is a Sophie Germain prime.

Together with 24992820163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (24992820163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12496410080 + 12496410081.

It is an arithmetic number, because the mean of its divisors is an integer number (12496410081).

Almost surely, 2^24992820161 is an apocalyptic number.

It is an amenable number.

24992820161 is a deficient number, since it is larger than the sum of its proper divisors (1).

24992820161 is an equidigital number, since it uses as much as digits as its factorization.

24992820161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 24992820161 in words is "twenty-four billion, nine hundred ninety-two million, eight hundred twenty thousand, one hundred sixty-one".