10520333440 has 64 divisors (see below), whose sum is σ = 26473896000. Its totient is φ = 3986648064.

The previous prime is 10520333437. The next prime is 10520333441. The reversal of 10520333440 is 4433302501.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×10520333440² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10520333441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420420 + ... + 444739.

It is an arithmetic number, because the mean of its divisors is an integer number (413654625).

Almost surely, 2^10520333440 is an apocalyptic number.

10520333440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10520333440 is an abundant number, since it is smaller than the sum of its proper divisors (15953562560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10520333440 is an equidigital number, since it uses as much as digits as its factorization.

10520333440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865197 (or 865185 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 10520333440 its reverse (4433302501), we get a palindrome (14953635941).

The spelling of 10520333440 in words is "ten billion, five hundred twenty million, three hundred thirty-three thousand, four hundred forty".