10398803521 has 12 divisors (see below), whose sum is σ = 10559408940. Its totient is φ = 10239342080.

The previous prime is 10398803507. The next prime is 10398803567. The reversal of 10398803521 is 12530889301.

It can be written as a sum of positive squares in 6 ways, for example, as 430977600 + 9967825921 = 20760^2 + 99839^2 .

It is not a de Polignac number, because 10398803521 - 2²³ = 10390414913 is a prime.

It is a super-2 number, since 2×10398803521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10398803501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7639881 + ... + 7641241.

It is an arithmetic number, because the mean of its divisors is an integer number (879950745).

Almost surely, 2^10398803521 is an apocalyptic number.

It is an amenable number.

10398803521 is a deficient number, since it is larger than the sum of its proper divisors (160605419).

10398803521 is an frugal number, since it uses more digits than its factorization.

10398803521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

It can be divided in two parts, 1039880 and 3521, that added together give a palindrome (1043401).

The spelling of 10398803521 in words is "ten billion, three hundred ninety-eight million, eight hundred three thousand, five hundred twenty-one".