10521440350 has 24 divisors (see below), whose sum is σ = 19587918168. Its totient is φ = 4204696800.

The previous prime is 10521440333. The next prime is 10521440353. The reversal of 10521440350 is 5304412501.

It is a happy number.

It is a super-2 number, since 2×10521440350² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521440353) 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, 41889 + ... + 150988.

It is an arithmetic number, because the mean of its divisors is an integer number (816163257).

Almost surely, 2^10521440350 is an apocalyptic number.

10521440350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10521440350 is a deficient number, since it is larger than the sum of its proper divisors (9066477818).

10521440350 is a wasteful number, since it uses less digits than its factorization.

10521440350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193980 (or 193975 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 10521440350 its reverse (5304412501), we get a palindrome (15825852851).

The spelling of 10521440350 in words is "ten billion, five hundred twenty-one million, four hundred forty thousand, three hundred fifty".