24521345545481 has 2 divisors, whose sum is σ = 24521345545482. Its totient is φ = 24521345545480.

The previous prime is 24521345545451. The next prime is 24521345545493. The reversal of 24521345545481 is 18454554312542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23089754832400 + 1431590713081 = 4805180^2 + 1196491^2 .

It is a cyclic number.

It is not a de Polignac number, because 24521345545481 - 2¹⁰ = 24521345544457 is a prime.

It is a super-2 number, since 2×24521345545481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24521345545441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12260672772740 + 12260672772741.

It is an arithmetic number, because the mean of its divisors is an integer number (12260672772741).

Almost surely, 2^{24521345545481} is an apocalyptic number.

It is an amenable number.

24521345545481 is a deficient number, since it is larger than the sum of its proper divisors (1).

24521345545481 is an equidigital number, since it uses as much as digits as its factorization.

24521345545481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360000, while the sum is 53.

The spelling of 24521345545481 in words is "twenty-four trillion, five hundred twenty-one billion, three hundred forty-five million, five hundred forty-five thousand, four hundred eighty-one".