10504439521 has 2 divisors, whose sum is σ = 10504439522. Its totient is φ = 10504439520.

The previous prime is 10504439501. The next prime is 10504439551. The reversal of 10504439521 is 12593440501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8609056225 + 1895383296 = 92785^2 + 43536^2 .

It is a cyclic number.

It is not a de Polignac number, because 10504439521 - 2¹⁵ = 10504406753 is a prime.

It is a super-2 number, since 2×10504439521² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10504439501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252219760 + 5252219761.

It is an arithmetic number, because the mean of its divisors is an integer number (5252219761).

Almost surely, 2^10504439521 is an apocalyptic number.

It is an amenable number.

10504439521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10504439521 is an equidigital number, since it uses as much as digits as its factorization.

10504439521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 10504439521 in words is "ten billion, five hundred four million, four hundred thirty-nine thousand, five hundred twenty-one".