24085487981 has 2 divisors, whose sum is σ = 24085487982. Its totient is φ = 24085487980.

The previous prime is 24085487963. The next prime is 24085488023. The reversal of 24085487981 is 18978458042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16985908900 + 7099579081 = 130330^2 + 84259^2 .

It is a cyclic number.

It is not a de Polignac number, because 24085487981 - 2¹⁸ = 24085225837 is a prime.

It is a super-2 number, since 2×24085487981² (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 (24085487941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12042743990 + 12042743991.

It is an arithmetic number, because the mean of its divisors is an integer number (12042743991).

Almost surely, 2^24085487981 is an apocalyptic number.

It is an amenable number.

24085487981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24085487981 is an equidigital number, since it uses as much as digits as its factorization.

24085487981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 24085487981 in words is "twenty-four billion, eighty-five million, four hundred eighty-seven thousand, nine hundred eighty-one".