24933983981 has 2 divisors, whose sum is σ = 24933983982. Its totient is φ = 24933983980.

The previous prime is 24933983941. The next prime is 24933983989. The reversal of 24933983981 is 18938933942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20237623081 + 4696360900 = 142259^2 + 68530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24933983981 is a prime.

It is a super-2 number, since 2×24933983981² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 24933983981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24933983989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12466991990 + 12466991991.

It is an arithmetic number, because the mean of its divisors is an integer number (12466991991).

Almost surely, 2^24933983981 is an apocalyptic number.

It is an amenable number.

24933983981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24933983981 is an equidigital number, since it uses as much as digits as its factorization.

24933983981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 59.

The spelling of 24933983981 in words is "twenty-four billion, nine hundred thirty-three million, nine hundred eighty-three thousand, nine hundred eighty-one".