10521885449 has 4 divisors (see below), whose sum is σ = 10524286080. Its totient is φ = 10519484820.

The previous prime is 10521885443. The next prime is 10521885461. The reversal of 10521885449 is 94458812501.

10521885449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10521885449 - 2⁴ = 10521885433 is a prime.

It is a super-2 number, since 2×10521885449² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10521885443) 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 in 3 ways as a sum of consecutive naturals, for example, 1193729 + ... + 1202510.

It is an arithmetic number, because the mean of its divisors is an integer number (2631071520).

Almost surely, 2^10521885449 is an apocalyptic number.

It is an amenable number.

10521885449 is a deficient number, since it is larger than the sum of its proper divisors (2400631).

10521885449 is an equidigital number, since it uses as much as digits as its factorization.

10521885449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400630.

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 10521885449 in words is "ten billion, five hundred twenty-one million, eight hundred eighty-five thousand, four hundred forty-nine".