4540332521440 has 48 divisors (see below), whose sum is σ = 10727065748448. Its totient is φ = 1816043245056.

The previous prime is 4540332521401. The next prime is 4540332521447. The reversal of 4540332521440 is 441252330454.

It is a super-2 number, since 2×4540332521440² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4540332521440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4540332521447) 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, 2594269 + ... + 3976291.

It is an arithmetic number, because the mean of its divisors is an integer number (223480536426).

Almost surely, 2^{4540332521440} is an apocalyptic number.

4540332521440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4540332521440 is an abundant number, since it is smaller than the sum of its proper divisors (6186733227008).

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

4540332521440 is a wasteful number, since it uses less digits than its factorization.

4540332521440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402571 (or 1402563 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 4540332521440 its reverse (441252330454), we get a palindrome (4981584851894).

The spelling of 4540332521440 in words is "four trillion, five hundred forty billion, three hundred thirty-two million, five hundred twenty-one thousand, four hundred forty".