24640561054649 has 2 divisors, whose sum is σ = 24640561054650. Its totient is φ = 24640561054648.

The previous prime is 24640561054471. The next prime is 24640561054663. The reversal of 24640561054649 is 94645016504642.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23734386522025 + 906174532624 = 4871795^2 + 951932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24640561054649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24640561054594 and 24640561054603.

It is not a weakly prime, because it can be changed into another prime (24640561054699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12320280527324 + 12320280527325.

It is an arithmetic number, because the mean of its divisors is an integer number (12320280527325).

Almost surely, 2^{24640561054649} is an apocalyptic number.

It is an amenable number.

24640561054649 is a deficient number, since it is larger than the sum of its proper divisors (1).

24640561054649 is an equidigital number, since it uses as much as digits as its factorization.

24640561054649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 56.

The spelling of 24640561054649 in words is "twenty-four trillion, six hundred forty billion, five hundred sixty-one million, fifty-four thousand, six hundred forty-nine".