10521440344 has 16 divisors (see below), whose sum is σ = 20585427120. Its totient is φ = 5031993120.

The previous prime is 10521440333. The next prime is 10521440353. The reversal of 10521440344 is 44304412501.

It is a super-2 number, since 2×10521440344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28590687 + ... + 28591054.

It is an arithmetic number, because the mean of its divisors is an integer number (1286589195).

Almost surely, 2^10521440344 is an apocalyptic number.

It is an amenable number.

10521440344 is a deficient number, since it is larger than the sum of its proper divisors (10063986776).

10521440344 is a wasteful number, since it uses less digits than its factorization.

10521440344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57181770 (or 57181766 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 10521440344 its reverse (44304412501), we get a palindrome (54825852845).

The spelling of 10521440344 in words is "ten billion, five hundred twenty-one million, four hundred forty thousand, three hundred forty-four".