104244513521 has 2 divisors, whose sum is σ = 104244513522. Its totient is φ = 104244513520.

The previous prime is 104244513493. The next prime is 104244513523. The reversal of 104244513521 is 125315442401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90908883121 + 13335630400 = 301511^2 + 115480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104244513521 is a prime.

Together with 104244513523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104244513523) 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, 52122256760 + 52122256761.

It is an arithmetic number, because the mean of its divisors is an integer number (52122256761).

Almost surely, 2^104244513521 is an apocalyptic number.

It is an amenable number.

104244513521 is a deficient number, since it is larger than the sum of its proper divisors (1).

104244513521 is an equidigital number, since it uses as much as digits as its factorization.

104244513521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 104244513521 its reverse (125315442401), we get a palindrome (229559955922).

The spelling of 104244513521 in words is "one hundred four billion, two hundred forty-four million, five hundred thirteen thousand, five hundred twenty-one".