24432449981 has 2 divisors, whose sum is σ = 24432449982. Its totient is φ = 24432449980.

The previous prime is 24432449903. The next prime is 24432450047. The reversal of 24432449981 is 18994423442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14224378756 + 10208071225 = 119266^2 + 101035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24432449981 is a prime.

It is a super-2 number, since 2×24432449981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24432442981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12216224990 + 12216224991.

It is an arithmetic number, because the mean of its divisors is an integer number (12216224991).

Almost surely, 2^24432449981 is an apocalyptic number.

It is an amenable number.

24432449981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24432449981 is an equidigital number, since it uses as much as digits as its factorization.

24432449981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 50.

The spelling of 24432449981 in words is "twenty-four billion, four hundred thirty-two million, four hundred forty-nine thousand, nine hundred eighty-one".