24642978469 has 2 divisors, whose sum is σ = 24642978470. Its totient is φ = 24642978468.

The previous prime is 24642978467. The next prime is 24642978497. The reversal of 24642978469 is 96487924642.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23244966369 + 1398012100 = 152463^2 + 37390^2 .

It is a cyclic number.

It is not a de Polignac number, because 24642978469 - 2¹ = 24642978467 is a prime.

It is a super-2 number, since 2×24642978469² (a number of 22 digits) contains 22 as substring.

Together with 24642978467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24642978461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12321489234 + 12321489235.

It is an arithmetic number, because the mean of its divisors is an integer number (12321489235).

Almost surely, 2^24642978469 is an apocalyptic number.

It is an amenable number.

24642978469 is a deficient number, since it is larger than the sum of its proper divisors (1).

24642978469 is an equidigital number, since it uses as much as digits as its factorization.

24642978469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 61.

The spelling of 24642978469 in words is "twenty-four billion, six hundred forty-two million, nine hundred seventy-eight thousand, four hundred sixty-nine".